pest

Hi everyone, need some help to ID what's going on here. Lost a few Acro to this. Seems to be STN? Does the decay pattern suggest pest? I have not seen amy red bugs or AEFW, just have some pods crawling on it lol. NITRATE - 2 Phosphate - reading zero, but pretty sure their a bit ALK - 8.6...

So have a hammer and it’s always had some “dark spots” figured it was some discoloration of some sort. After tonight looks like it has spread ALOT since I’ve last paid attention to it. Might someone know what or why there is some blue Something growing around my hammer? Got the best pic I could...

Hello! I’ve noticed this brown fuzzy looking thing popping in and out of a hole in my hammer coral skeleton (bottom left)I made sure to dip the coral before adding it to my tank, but I guess whatever it is, wasn’t phased by the dip. Any ideas what this could be? Is it harmless, harmful? Hammer...

Hi, I got a free colony of bambams and there's this yellow thing on it that looks like a sponge but I'm not sure as I have never seen one. I also dipped the whole thing yesterday so is it dead? It looks the same as it did before. Are these little things harmful and if so, how do I remove it? Can...

So i dipped my goni in some Melafix Coral Dip and these two things came out. I don't think they are copepods because they are at least twice the size of the ones I see in my tank. Any clue what it is? They look like little shrimps and but I really am unsure whether or not they are copeods. Also...

Anyone can ID this for me? Today one of my hammers died. Last night it wasnt happy and looked extremely stressed. Sucked to see it that way cause it was fine just hours before in the morning. So i dipped it in iodine and put it back thinking its a bacterial infection. At midnight i came down and...

I have done some digging and but can’t seem to identify what this is and if it is harmful to my tank inhabitants. Grows on glass, live rock, and shells and seems to move/ grow by the day. Any thoughts? .

So I bought a used biocube 32. I haven’t got any livestock or coral yet but I plan on a seahorse tank so anything that stings is a no no. As soon as I set it up I started seeing small bristleworms, too many to kill by hand. Now I’ve seen a really big one, and I’m wondering if there are any...

I have a Fluval Evo 13.5 that's been running for the past year, today I noticed these little guys all over my glass. I'm not sure what to make of them, I'm assuming they are some sort of a pest. I initially thought copepods, but I haven't introduced any to my tank - maybe they came in as...

Hi, I was doing maintenance in my tank and i noticed this little fellow lurking under a rock. It probably came with my live rock considering that I haven't introduced any corals yet. Should I be worried about it? Thanks!

Can anyone help me identify this and figure out if it is bad for the coral and my tank ?

Quite sure these little fellas came on some recent frags, don’t seem to be bothering much aside from me. curious if anybody can ID them, they’re extremely small, maybe 2mm and brown in appearance, I’m treating with PraziPro atm after seeing it irritates them in a coral bath, however they’re...

Hey All - Looking for some help in identifying a possible pest in my tank. These things are all over my glass and my zoanthid frag and showed up overnight. Tank is about 3-4 months old and added my first corals about 3 weeks ago. I did dip them before putting them into my tank (unfortunately...

This was burrowed into a coral I picked up today. Does anyone have an idea what it is? Coral rx did nothing for it.

Can anyone tell me what this pest is, and if it is a threat to my reef. It’s a very small white/ or translucent oval shaped pest. I’m seeing them on my glass as well as coral and live rock.

Please help with some advice! I have no clue what this is at all. It’s about 2 inches long at least. Has anyone dealt with this before? If so please help with some advice!! Very much appreciated!!! Thank you

Found this weird white growth? Worm? On my frogspawn. Honestly not sure what it is. Attaching some pics. Any ideas?

Hello everyone! This is my first time on a reefing forum. I made an account because I can’t find any information regarding what’s going on in my tank. 32 gallon LED Biocube All levels are completely fine and the tank is doing great other then the literal 2 - 300 slugs that seemed to develop...

I have had this piece for a few months now and it has been growing. Brief lighting issue cause some fading, but that was resolved and color returning to normal. I noticed the underside has a few areas that are open. These were encrusted when I bought the frag, so I know something is up, but I...

So here is a picture and a video of what they look like, I’m pretty stuck on what they might be. Does anyone know?

Can anyone tell me why these things are? There’s about 30 of them all throughout my tank, and they’re all about the same size. My friend says they’re aiptasia, but I like variety of opinions.

Hi all, I recently bought a new Acan and today I've noticed these arms growing off it that look similar to a colourless Zoa or Duncan head. One of them seems to have detached from the Acan and growing out of a hole in the live rock. I've never noticed anything like this on my other Acan that...

Hi guys. I bought a zoa colony from the LFS. A healthy colony. A werk later i noticed these tiny (5mm) fan like think protruding between the zoas. I thought it was aiptasia and tried aiptasia x. The little bugger was to fast and this was not successful. I then tried superglue. This didn’t...

Found about 4 of these things in my sandbed coming out at night. White worms about 2 inches long or so. Any one know what they are?

All of a sudden I have an infestation of very small brown and black pests that are scraping my rocks clean of all coralline, and attacking my acropora . Rocks looks bleached with blue streaks underneath. I found some from on A new frag weeks ago as it suddenly hade four on it, eating the acro...