coral health

Hello, the meat band on one of my torch corals is receding a lot, but the one about 4 inches away (lower) looks perfectly healthy. Any reasons why one would be affected by something but not the other? I took it off the rock, dipped it and put it in the sand bed for now. My only guess is it’s...

Modern Reef (by Euro Corals) — Where Coral Farming Expertise Meets Cutting‑Edge BIO‑Reef Science www.ModernReefUSA.com Hi Reef2Reef, Modern Reef was born from decades of coral cultivation mastery at Euro Corals—one of Europe’s most prestigious 100% aquaculture coral farms. We took what works...

Just got some frags. Most look fine, but my palythoa is looking funky. It has a clear, expanded coat on it. Safe to put in the tank or no?

Ive been in the hobby for years but only have about a year with saltwater and only have had a kenya leather, one zoa polyp, and a plate coral cant remember what it was. However i picked up what you see in the attached photos 4 days ago. The corals were all placed were you see them currently and...

I have noticed today and yesterday that pieces of the duncan were floating around the tank. Upon closer inspection the duncan had black spots on the tips of the tentacles with brown slime blowing off. The torch shown in the pictures had similar issues as well as the hammers and frogspawns. I...

TL;DR: Building an AI system to better detect coral bleaching in the wild. Your tank photos could help save real reefs. Hey R2R, I’m an AI/ML researcher and engineer, and I used to be an active member here years ago before life pulled me in other directions. While I’ve been away from the...

The first issue I have is with the dragon soul favia. He has what looks like sand or mineral deposits in his mouth. I tried removing them already but they came back. The other three coral pictures I need a general identification so I can take care of them properly. The last issue I have...

I’ve had a slowburn of bad luck in my tank over the last 3 months, losing hammers, torches bailing out and so on. Things stabilized for a month, and in the last 2 weeks one of my acans, and both my favias have began going downhill, while watching the tank this evening i noticed weird growth from...

Not sure why this is happening. All my other corals are happy and opening up. Just this one torch doesn’t want to. I’ve tried moving it around to different flow areas but nothing changed. It used to open up but not any more. Now it’s just shriveled and the flesh is receding Salinity 1.025 Kh...

When I came home from this weekend the light was off extremely dimmed. Which is unusual I check the power supply and the main block was hissing. I purchased a new one as I have had to do this multiple times. After plugging in the light the power supply light turned right on but the connection...

Hi so I’m having some issues with my tank. Things were going really good then corals started to go downhill. It started with my lobo receding. I assumed this was light or flow so moved it. My chalice then started to develop brown blobs but I put this down to my regal tang nipping at it. Now my...

The flesh is coming off of the bottom of my plate coral. My wife says she's seen our diamond goby, which we recently added, picking at and underneath the coral. I can tell from the shifted sand that the goby has been removing sand from underneath and around the coral. Any advice? Will the flesh...

I had this lepto in a spot where some of the polyps were in contact with rock, and when i moved it since i saw some algae growth, likeley due to low flow, the contact areas were whitish, is the coral healthy? I see on the ridges of the coral some discoloration, does that mean something? Thanks...

I have this coral here and I noticed it is starting to get a white layer in the middle. I lost one smaller coral before when my tank was not ready for them. This tank has been up for 1 year. Should I be worried? Not familiar with LPS yet and would really appreciate help learning.

Hey guys. I’m almost too embarrassed to post. I’ve lost like 8 mushrooms and I think it’s all my over managing of my tank. Help me mushroom lords. I don’t know what it is, I’ve lost: Aqua SD Sunkist Bounce Aqua SD Sunkist Bounce (5th and 6th photo - before and after) LFS Bounce 3 out of 4...

Hey, all! Looking for some thoughts from more experienced folks on my Favia. Got it about 3-4 months ago from my LFS off their bargain rack, figured I’d take a shot. It has proved to be one of the slow growing species. I’m noticing some different coloration in the center recently and I’m...

Hey folks, My tank is about 3 months old (since cycled), and like many reefers, it’s had ups and downs. I started keeping some coral frags around 4 weeks ago. Now, to my somewhat untrained eye, ai think they all look healthy, but I had a lovely 2 headed green frog spawn die on me in about 10...

Hello everyon! I want to go to my first convention (out of state), but I’m worried about keeping my purchases alive day 1 if I want to attend day 2 and fly back after day 2. How does everyone keep their corals alive if attending multi-day conventions? Do you ask the vendors to hold onto them...

Hello all, My ORA Red goniopora has not been thriving the last few months. After I purchased it, it grew exceptionally well and was always very extended. I’ve had it through a variety of conditions, including alk anywhere between 5 and 14 at various points. My parameters are very stable now...

Hello everyone! I am kinda new to corals and reefing and am having some trouble with my corals. I don't know what is wrong because my parameters are perfect with nitrate being the only thing that is a little high (by high I mean that it's like 5). I have also been testing my phosphates and those...

I got this frogspawn from the lfs on Thursday. It looks the same way in my tank that it did in the shop. When the lights went out and the polyps retracted, I noticed some coralline algae on the stalk and I’m a bit concerned. It seems really healthy but I’ve read that coralline only grows on dead...

just got a bunch of corals sent home. I have acans, torches, zoas and Duncans that the angelfish does not eat. BUT, my newly added scolymia is often being nipped at by my angelfish. THE VICTIM: THE PERPETRATOR: What should I do? it is taken a very harsh toll on the scaly sadly. no...

Introduction: I am a new user to R2R, but I have over 15 years of experience in the hobby of reef keeping. I am retired from the Marine Corps but currently work as a clinical researcher so I apologize if the format of my threads is too complicated. I also understand that most of the information...

Hey guy~ This tank was started in October 2022 in Taiwan. And most of the SPS were grown from frag. 25Gallon Tank Overview:Tanks size : master 45 x 45 x45 slave 45x40x36 (cm) Lighting : DIY LED 180w Hybrid ATI T5 24w x 4 Supplemental lighting : Aqua Knight LED 30w x 4WaveMaker : Jebao SLW10...

I've recently gotten a 190 gallon aquarium up and running with a 6 bulb T5 fixture on top of it, and I plan on introducing corals. My issue is deciding when, and one factor, I'm hoping this forum can help resolve, is my lighting situation. Since this fixture isn't dimmable, I can't dial the...