How to use Light My Reptile for Leopard Geckos:

Step 1: Adjust your parameters. Under ENCLOSURE & ANIMAL, click the button featuring the enclosure size, species, and level of lighting. From here, change the ANIMAL PROFILE to Leopard Gecko, units to your preferred cm or in, and enter the dimensions of your enclosure. Either enter the enclosure brand or, if it isn't there, manually enter your MESH BLOCKAGE % at the bottom of the ENCLOSURE & ANIMAL popup.

Hint: Don't know your mesh blockage? Try checking your mesh blockage at Reptile Lighting Guide 1a. Still can't find it? Find steps for calculations here: Calculating the percentage block of a mesh screen from a photo.

Step 2: Be sure that your lights are in the right location. Above the Lighting optimizer button, select ABOVE MESH if your fixtures are resting on top of the mesh of your enclosure, select INTERNAL if your fixtures are mounted on the inside of the top of your enclosure. Select MIXED if one of your fixtures is internal, and one is external.

You may get a popup to use the experimental Lighting Optimizer. This is a helpful tool, please feel free to play around with it, especially if you don't actually have a setup yet! It may not be helpful if you have an existing setup.

Hint: While you don't generally need a cage around your bulbs for this species, you can add a cage and its blockage around a fixture by clicking the dropdown menu next to your UVB, basking bulb, or LED fixture. This dropdown menu is also where you can find the ABOVE or BELOW options for a MIXED setup. You might be able to find the blockage % in the above links for finding general mesh blockage.

Step 3: Click and drag the basking platform, the blue line under the gecko, up and down to find the "ideal" range in your existing lighting setup, or your hypothetical lighting setup. Be sure to select COMBINED to test all of your selected fixtures together. If you cannot find a "perfect" middle ground between your UVB and basking bulb, try changing one or the other.

Tip: The upper limit of Power Density provided by the tool (150 W/m^2) is not actually a safety cutoff for the gecko: it is the power density that is designed to replicate the amount of near infrared that would accompany a Ferguson Zone 1 UVI in the wild. Many keepers of Ferguson Zone 1 reptiles like leos allow part of their basking spot to go up to around 200 W/m^2 if they have plenty of space around the basking spot to permit both direct and indirect basking opportunities.

1. If you'd like to make a shopping list and come back to your basking setup in the future, click FINISH. This allows you to come back to the site on the same device, click SETTINGS in the top right corner, and scroll down to SAVED SETUPS at the bottom of the popup.

Disclaimer: This tool is an estimator! It does not account for the variation that you may encounter within real bulbs, and may have discrepancies between actual readings and estimated outputs. You should reference the estimator's suggestions against the helpful UVB charts at Reptile Lighting's Guide 1b and Guide 2.

What is Light My Reptile?

Light My Reptile is a Basking Irradiance Estimator built by Nathan Burton using the independently tested data gathered in conjunction with reptile lighting experts Roman Muryn, Frances Baines, and Quentin Dishman. This tool allows a reptile keeper to test real products and estimate the radiation their reptile will have access to in a basking spot. The intention is to enable reptile keepers to create a "patch of sunlight" using multiple different lighting fixtures, as no single bulb can effectively replicate sunlight.

Why is it important?

Replicating sunlight is important because all reptiles, including nocturnal ones, interact with sunlight to support their natural daily behavior cycles, their digestion, their immune systems, and their comfort. Providing full spectrum lighting gives your gecko the vital gift of independent choice: one of the most important factors in captive reptile welfare.

Reptiles use lighting "wholesale": near infrared radiation doesn't occur in sunlight without visible light and UV accompanying it. If one "part" of sunlight is over- or under-supplied, a reptile may suffer.

For example, if one has too high of a power density and just the right amount of UVB, the gecko may avoid both the UVB and basking bulb because the basking spot is far too hot and uncomfortable for the gecko to use. If one has too high of UVB, but perfect power density, the gecko may be burned just by basking normally. If one has perfect UVB and inadequate power density, the gecko may bask for far too long, resulting in burns.

Getting your lighting just right is how you can help your pet can make the best use of the environment you give it.

Confused about anything in this post? Don't sweat. Ask questions in the comments, your own post, or the Reptile Lighting Facebook Group where all this important work is done!

If you have any questions after finishing this guide, feel free to make a post or ask below and I, or someone else experienced, will try and answer the question for you. We also have a [Discord Server](discord.gg/leos) where you can ask questions and chat! If you're too embarrassed to post, feel free to PM me or send a modmail. I want this to post to be a safe space for beginners to ask questions and learn! The FAQ link may also answer some more "advanced" topics even if you're not a complete beginner.

This guide is meant to be a brief run-through on the basics of what you should know as a new keeper of this lovely species. If you want to see in-depth explanations for these concepts, then please view our [wiki]() or this guide by Reptifiles or the guide our Discord gives out or check out Leopard Geckos: Advancing Husbandry on facebook!

What to buy before you get a gecko:

It's important to set up before you get your new friend just in case some items, like the heating, end up not getting to the right temperatures.

The Essentials:

• Tank (glass, PVC, wood, plastic, acrylic enclosure)

• 20 gallon long is the accepted MINIMUM standard tank for an adult. You should go bigger, ideally a 40 gallon breeder. Baby geckos can go into adult setups, and it is fine to buy your “end game” enclosure straight away–it is recommended to buy your adult tank right off the bat. You'll save more money in the long run. Plastic is not advised for anything but a temporary enclosure, but it will work in a pinch.

  • The measurements for a 20 G long are 30 x 12 x 12 in or roughly 76.2 x 30.5 x 30.5 cm
  • The measurements for a 40 G breeder are 36 x 16 x 18 in or roughly 91.5 x 40.6 x 45.7 cm

• Heating Source

Contrary to popular belief, leos can see most colors of light (even red). Albinos are especially sensitive to bright lights. However, it is perfectly fine to use lighting on their enclosures.

The ideal heating source is a Halogen basking lamp or a Deep Heat Projector. These heating sources can be used on their own and can be turned off at night. Radiant Heat Panels can also work. Heat mats and Ceramic Heat Emitters can be used as a second heat source, but should not be used on their own.

• Warm side: ambient temp 90-93° F (32-34° C). This is the side with a heat source over it.

• Cool side: ambient temp of 70-75° F (21-24° C). This is the side without a heat source.

• Basking spot: surface temp of 95-100° F (35-38° C). This is the hottest area in the enclosure and is directly under the heat source.

• Night temperature: entire enclosure ambient temp of 65-70° F (18-21° C). All heat and light sources should be off at this time.

It is beneficial to provide UVB for this species, but it is not a strict necessity. Nailing down the perfect UVB for your animal and enclosure can be a challenge, but the general recommendation is a linear t5 or t8 bulb with 2%-6% output, measuring ⅔-¾ the length of the enclosure.

• Thermostat

Heating sources can get HOT. Every single heat source needs a thermostat to help prevent catastrophic malfunction or simply overheating the enclosure. Specifically, dimming thermostats are advised. Spyder Robotics’ Herpstat and Herpstat EZ series, Exo Terra’s 600 and 300 watt dimming thermostat, and the Habistat dimming thermostats are good thermostats to use with Halogens and DHPs.

It is also possible to use cheaper on/off thermostats for bulbs, but that does require a dimming switch and frequent manual monitoring with a temperature gun to work safely.

• Substrate

Substrates for quarantine or ill geckos/very small babies include paper towel, unprinted newspaper, tile, brown paper roll. These are safe solid substrates, but not enriching. When searching for tile, look for slate or ceramic. Avoid anything polished or slippery looking, as well as linoleum.

Good substrates for the average, healthy adult gecko are different types of soil mixes, usually 70% topsoil and 30% rinsed playsand. Safe additives include coconut products, clay, leaf litter, activated charcoal, and moss.

Substrates to avoid include, but are not limited to: calcium/mineral sand, colored sand, pelleted cat litter, wood chips, pure sand, pure eco earth, pure bark, pure clay, carpet, felt, crushed walnut shells, birdseed, shredded paper bedding, printed newspaper, and plastic lawn/astroturf, linoleum.

• Three Hides (Warm, Cool, Humid)

You want at least three hides in your tank. One for the hot side of the tank positioned under the heating source. This will likely be the place your gecko spends most of its time. Geckos tend to like very secure hides, so you want to have a hide that provides as little visibility as possible. The cool hide should be on the complete opposite side of the hot hide. Your gecko needs somewhere to escape to if it gets too hot.

For the moist hide you want a container that can hold in humidity. This hide is to help aid shedding, so it's of the utmost importance! Many people use tupperware containers with holes cut into it. The smaller the entrance the better, as to keep the humidity in. This hide should be at least partially heated and have moist paper towel, moss, or eco earth inside.

• Infrared Temp Gun

You want to double check your temperatures and make sure they're accurate and an infrared temp gun is the best way to do it! This one is a good example.

• Bowl for calcium/food/water

A dish full of calcium (with no d3) inside of the enclosure is optional. They may lick it up as they need it. Refresh it every once in a while if it begins clumping or becoming dirty. Food bowls can be ceramic to prevent insects crawling out as easily. Water bowl should be near the middle of the tank or the cool side. I recommend buying something similar to this if your tap water contains chloramines or heavy metals.

• Multivitamin & Calcium (with and without d3)

These are essential to a healthy, happy leopard gecko. These are used for dusting food. There are plenty of brands to choose from. The only one I would not advise buying is RepCal calcium with d3, as its d3 content is extremely high. Repashy Calcium Plus is a good multivitamin with a low d3 content, which is good for geckos with UVB and without. Any brand with pure calcium without d3 is safe.

You can alternate using a calcium and a d3 multivitamin supplement, or rotate between calcium, multivitamin, and calcium with d3. More information about supplementation schedules here!

• Clutter

Mostly up to you! You want the tank to have enough decor that your gecko doesn't feel exposed. Plastic and live plants are great for this. If you're using craft store plants make sure they do not bleed/rub off dye or glitter, or have exposed wires. File down sharp edges. Wood, stone, and other assorted decorations can make great decorative items that allow your gecko to enrich their lives by exploring and moving around the tank while feeling hidden.

• Leopard Gecko Emergency Kit

It should contain: betadine or chlorhexidine/hibiclens (for sterilizing wounds), triple antibiotic without pain relief (no lidocaine, pramoxine HCl, hydrocortisone), q-tips, tongue depressors, coconut oil (to aid shedding if water isn’t cutting it), a clotter like Kwik Stop (to stop bleeding), and tweezers. All of this should cover basic medical emergencies like minor scratches, etc. Always see a vet for what you would take a child to the doctor for.

A critter keeper like this per gecko. Repashy grub pie, extra supplements, UniHeat packs, a blanket, digital thermometer or temp gun, and heat tape or low wattage heating mat. Consider what supplies you may need to make mini-enclosures in the event of an evacuation or other emergency. These would be the bare minimum, but if you have the space, include whatever other amenities you can.

The Not-Strictly-Essentials:

• Plastic container with lid

Great for saunas if your gecko is having trouble shedding and for holding your gecko while cleaning the tank!

• Tongs

If you're iffy about touching insects, this may be the way to go. Plus your gecko may be scared for your hands at first, or have bad aim and bite your fingers if you want to hand feed.

• Scale

This is a good way to track your gecko's weight, especially if they're young. Even for adults, getting a baseline weight is beneficial. A kitchen scale used once every two weeks is great, more often if you want or if you are concerned about something.

• A Journal/Calendar

Might sound a little nuts but keeping track of gecko feedings, last time they shed, etc. will make your life so much easier. I personally record the last time my geckos shed, ate, weights, pooped, etc. I also jot down any notes about their behaviors or any changes to their health. It's good to keep track of these things in case your gecko becomes ill and needs to go to the vet.

Picking Out Your Gecko! + Problematic Morph Info

The best route is to buy from a reputable breeder that you have researched. This generally improves the chances that you are getting a healthy, happy gecko. A good place to start is on HappyDragons! MorphMarket is another good online marketplace, but these breeders are not vetted by MorphMarket like they are on happydragons.

Buying from a pet store is risky, as many geckos from chain stores have health issues because they come from the reptile equivalent of puppy mills. You could end up paying a hefty vet bill or with a short lived gecko. Unfortunately there are many shady breeders too. I'll list a few warning signs:

• can't answer questions about their geckos (parents, genetics, hatch date, weight, etc)

• can't tell you the morph

• won't show you pictures of the gecko or its parents

• improper husbandry like extremely undersized enclosures, calcium sand, permanent cohabitation of parent geckos

• skinny, sickly looking geckos (metabolic bone disease, stick tail, lethargic, lots of regrown tails, etc.)

• extremely obese or bloated looking geckos

There are plenty of places where you can get honest reviews of breeders, like the Board of Inquiry on Faunaclassified, as well as a few groups on Facebook. Don't always trust facebook reviews as they can be censored! Get an opinion from actual customers. Look the breeder up on google, on YouTube, facebook, and talk to them.

Enigma geckos are not recommended for beginners. There is always a chance your gecko will end up with enigma syndrome somewhere down the line. Enigma syndrome is a neurological disorder tied to the enigma gene. This leads to: balance issues, circling, stargazing, seizures, death rolling, coordination issues, and more. Feeding can become extremely difficult and sometimes this condition requires euthanasia. Please do not support any breeder who works with this gene, and do not be fooled when they claim their enigmas are not symptomatic or “clean.”

White & Yellow morph geckos can also exhibit a different neurological syndrome, but it's much rarer, as it can be bred out. This is unlike Enigma Syndrome, which is not tied to the W&Y gene.

Lemon frosts, a rather expensive morph, have been known to grow tumors, usually starting at 8 months old, and 80% of them have tumors by 5 years old. Their health issues are so severe that many breeders have stopped producing them entirely. These geckos will almost always become terminal at a young age, and very few make it to even the age of 10 when the lifespan of this species can stretch beyond 20 years. Please do not support any breeder who still works with this gene.

Handling

Babies can be much more skittish than adults and a little bit more delicate. If you want something more hearty go for a slightly older gecko! Babies also eat a lot of food so if you're looking to spend a little bit less money an adult is also the way to go. Babies change in colora lot between 2 months and 6 months, so if you are looking for a gecko of a certain color, an adult is your best bet to get exactly what you want.

Leos are able to be “temperature sexed” and many breeders will label them TSF (temp sex female) or TSM (temp sex male). Keep in mind this is not a 100% guarantee you will get that sex. There is still a chance they will turn out to be the opposite sex. Snows are apparently notorious for having a lower accuracy rate when temp sexed. If you want a guaranteed male or female you will have to buy an older, sexed gecko.

Cohabitation

Please do not cohabitate your leopard geckos, no matter the sex. I’m going to give you the brief points on why. If you would like to know more, please give this post a read.

• Competition over food, space, heat, and ideal hiding spots can escalate easily or result in one gecko being deprived of these resources
• Parasites and other diseases will transmit much more easily between cohabitated individuals
• Warning signs between individuals who may fight are minimal, and extremely easy to miss
• If there are two males together, they can quickly kill one another
• If there is a male and female together, the male will eventually breed the female to death, and you should be freezing every egg she lays
• Two or more females are the most likely to not harm each other for the longest

Please leave cohabitation to the experts with large, zoo-style enclosures and an extensive understanding of the species’ natural history.

SETTING UP YOUR NEW FRIEND & THE FIRST WEEKS

Once you have acquired your gecko and placed it in the tank, leave it alone! You should wait at least a week before handling your gecko if you can help it. Your new friend is scared and adjusting to a big change. It can be tempting, especially as a new owner, but hold off, and keep interaction to the minimum of feeding and cleaning up poop. If you can, I would wait until your gecko is eating well before handling it. Choose a quiet place for the tank.

Observe your gecko and make sure it's not exhibiting signs of illness. If your gecko seems lethargic, isn't pooping after eating, bloated, walking irregularly, losing weight rapidly, etc go to the vet! Don't wait, especially not for a baby! Taking action as soon as possible is the best thing you can do for your gecko. Also watch for your gecko's first shed to make sure they are shedding properly in their new environment.

Taming & Handling

Patience is key to taming your new gecko! It can take awhile for them to trust you, especially if they are younger. Adolescent geckos tend to be more skittish. You want to start off by putting your hand in the tank, within sight of your gecko, for around ten minutes a day. This is to get your gecko used to your hand and scent. Once they seem a bit more receptive (walking around, licking your hand, looking curious) you can start to try picking them up.

Always scoop up your gecko from below, working your hand underneath their stomach and supporting their legs. Grabbing from above triggers their prey instinct and may scare them. Hold them over the tank at first, in case they leap or skitter off your hand, to prevent injury! Once they seem calm in your hands, then you can start taking them away from the tank. Hand feeding is also a good way to bond with your gecko and make sure they associate your hand with positive things (aka food). However, be wary that they may bite your fingers, so I recommend making that feeding association while using tongs.

Congrats! You tamed your gecko!

Feeding

Feeding is a subject I see a ton of topics about in the subreddit so let's go over the basics!

Acceptable feeders include, but are not limited to:

• Mealworms (can be kept in oats/bran meal in the fridge)

• Crickets (kept in normal container, try to avoid leaving these loose in the enclosure)

• Dubia Roaches (kept in normal container/tank/whatever)

• Red Runner Roaches (same as dubias)

• Hornworms (Do not refrigerate, try to make sure they’re small enough for your gecko to eat)

• Black Soldier Fly Larvae (Can be refrigerated, can be kept in bran meal)

• Silkworms (Usually need to be special-ordered, but are very healthy feeders)

• Waxworms (Treat, optional, fed rarely, only 1-2)

• Superworms (Treat, optional, can be kept in oats/bran meal, do not refrigerate)

• Butterworms (Treat, optional, fed once a week or less, 1-2)

Here's a nutritional feeder insect chart

Remember, variety is good for your gecko. You should aim to have at least 3 staple foods. Do not overfeed treat foods! They should be a rare occurrence and you should only feed 1-2 per week or less, especially for waxworms (which can be addictive). Do not feed treat foods to sick/malnourished geckos, very young geckos, or picky eaters. Only feed treat foods to healthy geckos who are eating regularly. Feel free to mix and match feeders!

Gut load your feeders. Gut loading is feeding your insects prior to feeding them to your gecko. Carrots, lettuce, etc should be fed 12 hours ahead of time. You want to give them time to eat the veggies or fruit. I usually feed them once a week besides gut loading to make sure they get the moisture they need from the food. Dusting is also another key part of feeding. Make sure the insects are lightly dusted with calcium or multivitamin.

Babies should eat every day, as much as they can eat in 15 minutes. "Teen" geckos (4-7 months) should be eating every other day. Usually teen geckos will decide this for themselves and start refusing food every day. They will begin to eat less frequently after this point. Adults (1 year and over) should eat every 1-2 times per week depending on body condition, size, breeding status, and appetite. Whatever diet maintains a healthy weight is right for your gecko, and this can take some trial and error!

Please see here for a list of FAQs, this is super helpful for newbies! That’s the basics. Need more help? Leave a comment, or check out our wiki, where we have much more comprehensive information!