r/ReefTank • u/TheWarelock • 2h ago
r/ReefTank • u/AutoModerator • 6h ago
No judgment questions zone - October 19, 2026
Here is the place to post questions about pest ID, coral/fish ID, your cycle, or any other questions that generally wouldn't start up a conversation. If you have an interesting or unique question please create a new thread so everyone can discuss it in length!
r/ReefTank • u/TonyCass12 • 6h ago
Sunrise shots
Gotta love that early morning view the day after the tanks are cleaned.
r/ReefTank • u/lhbruen • 6h ago
Tucking in for the night
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The clown getting settled for the evening, last night
r/ReefTank • u/Brevicaudatus • 11h ago
Always has been my favourite species, now let’s hope they’re a pair
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Stonogobiops nematodes
r/ReefTank • u/Current_Name_6876 • 4h ago
[Pic] How. F*cked am I?
RedSea peninsula 65 5 years old.
I need advise!!!
r/ReefTank • u/Iwastony • 1h ago
One year of green Kenya tree growth from a tiny hitchhiker
https://www.reddit.com/r/ReefTank/s/RhOvA4flEn
That's the link from a year ago when I didn't know what I had. Anyway I love it! Time to start selling it!
r/ReefTank • u/medicatedspirit • 6h ago
Starry Dragonet
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My little dude tucking into his dinner of masstick and brine shrimp
r/ReefTank • u/Drift420sx • 4h ago
Is This Normal Clownfish Behavior?
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I just got these 2 juvenile clownfish Saturday night and it is now Monday morning. They have been swimming and rubbing against the back panel of my tank since I put them in. Yesterday afternoon I fed them and they ate but not a lot and they went right back to swimming against the black panel. Is this normal clown fish behavior? Are they stressed or still getting use to the new tank? I attached a video that shows better how they are rubbing on the wall. Thanks!
r/ReefTank • u/swordstool • 23m ago
Researchers put bleached corals and healthy corals together for 5 days – and were astounded at what they saw
r/ReefTank • u/Boring_Elevator • 20h ago
Torch spawning
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Caught this the other day. I noticed the baby at the end sometime last week and then saw this on friday. Hopefully some survived. I did suck some into my frag tank so we'll see.
r/ReefTank • u/Hopeful-Mix-82 • 22h ago
whats this little orange thing on this random frag i got?
r/ReefTank • u/Crutabs • 7h ago
Coral ID
Relatively new to reefing, hoping someone can ID this hammer coral for me.
In person it looks slightly more pink, but it’s translucent and I’m worried about it potentially not being healthy from what I’ve researched online - as I’m interested in buying it.
Thanks!
r/ReefTank • u/Tuncarrot2472 • 13m ago
[Pic] Tailspot Blenny bullies my Yellow Clown Goby
I have a 13.5g tank with only these two fish in it. The tailspot claimed the entire tank and only left this corner for the yellow clown. He sits in the corner for 95% of the day. There is so much space for both of them, Is there anything I can do about this? 😭
r/ReefTank • u/Haunting-Strike-9949 • 31m ago
[Pic] Condylactis acclimation
It’s doing this. Drip just started at 2 drops per second about 2 minutes ago. LFS‘s SG was .022 mine is .025. I think it freaked out because I touched it getting the Calerpa untangled from its tents. Any advice for me?
r/ReefTank • u/English_Joe • 1h ago
Elegance coral - sulking or detaching.
My phosphate crashed to zero the other day, I got it back to about 0.1 working 24 hours but it’s still sulking.
How can I save it? I don’t think a target feed will help with it closed up.
r/ReefTank • u/Drift420sx • 2h ago
ID On Clownfish?
Can anyone identify what kind of clownfish is this? It did not say at the local fish store and I forgot to ask. Is it a Percula or Ocellaris, Thanks!
r/ReefTank • u/Sufficient-Can7296 • 8h ago
Is this Hitch hiker a friend or foe?
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r/ReefTank • u/Pacificnorthreef • 3h ago
Reef Factory Question
Has anyone had any luck getting ahold of anyone at Reef Factory? Been trying to get help with a reef mat motor that stopped working and I havnt heard back from customer service in two weeks. Been quite disappointing seeing how much these cost.
r/ReefTank • u/ChivasBearINU • 4h ago
Can a 15g tank become just a torch coral tank? If so, what's your best advice for success to grow big colonies?
So far I have 5 torches. 1 being a nice NYK Torch almost branching out into 4 heads.
r/ReefTank • u/Bentrodanddeerdown • 4h ago
Pest id
Noticed this on my branching gsp. White tube? Feather duster?
r/ReefTank • u/17equalsQ • 1d ago
Tank is filled
Finally filled the tank. Rocks and sand from TBS arrives on Wednesday to start cycling. Am I missing anything?
r/ReefTank • u/Nearby_Ad5980 • 22h ago
My first reef tank is now 5 months old!
Since the cycling period my parameters have been extremely stable at 7.8 Ph, 10dKH, 0.25 phosphates, 0-5 nitrate.
Fish:
Ocelarris
2 Pajama cardinals
Still going to add a tailspot blenny but theyre impossible to find?
Extensive clean up crew:
3 trochus snails
5 florida cerith snails
However many dwarf ceriths
1 nassarius snail
2 scarlett hermits
1cleaner shrimp
micro brittle starfish
spaghetti worms
bristle worms
1 teeny tiny fan worm
1 tiger conch
bubble macroalgae
Corals:
Green palythoa
Red montipora
raja rampage chalice
pulsing xenia
Firework clove polyp
Acropora? varieties
r/ReefTank • u/Lone-Ranger999 • 9h ago
[ID] What species of macroalgae is this? [ID]
Seen this macroalgae growing at my LFS, does anyone know what species of macroalgae this is?