identify

anyone know what these black or dark colored bubbles are? they are not like air bubbles but more look like a solid but wanted to know if they are bad and should i take them out? I think they are bad since the torch they seem to be attached to looks like the stem has eroded or eaten away if these...

I was dipping my new christmas tree rock and this guy came running off. Want to play it safe so I have him in a breeder basket right now. Haven’t heard of any brittle star pests before, and I love to have them as they are great for taking care of detritus. Just want to know if it’s a pest and...

Any ideas as to this algae? It is red with long strings, 1-2 cm. No bubbles and not snotty so I'm hopeful it's not dino

I just got this acro in a trade today. Would Acropora kimbeensis be an adequate guess? Country of origin is unfortunately unknown :( Growth of the mothercolony is a somewhat high "table". If anyone has seen it for sale somewhere, the "designer-name" would be great too :) Thanks

Long white stringy creature living in chaeto. It retracts when I touch the water or it senses vibrations on aquaclear filter. Maybe some kind of worm??

Can anyone provide an ID for this bad boy? I got a frag of it and they called it tri-color valida which I don't think is correct.

Is this a (the?) culprit for my unhappy zoas? Pics not great, but 2 large antenna and visible eye spots. Could also be a slug -- the purple portion is almost firm like a mantle. As always, burn it, sump it or good guy?

Took a time lapse of one of the “unknown” polyps I found, still not sure what it is, lmk if u do.

Update: Upon further research, I was able to educate myself a little. It appears the snails are harmless and the limpets?; are as well. The flatworms though; not so sure. Hello all! Found a few new critters I haven’t noticed before. Seen a few of these little snails climbing around. They’re...

Hey guys. Posted in another post about QT'ing these corals. Figured I'd also post about identifying the exact corals or names. I know three are a species of Montipora and one is a candy cane. Just looking for specifics please. Also; ideal placement for each would be fantastic! Thanks guys. #1...

Just found this guy on the outside of my skimmer. He's from TBS Live Rock, so Gulf of Mexico. About 1cm, translucent-ish, pale cream/tan with crazy spikes & antenna. WHAT IS THIS?!?

Hi. These recently appeared in my sump. They’ve been stationary but I cannot figure out what they are for the life of me. They’re a clear/whitish color. Any ideas?

So I just happens to look in my overflows and saw a bunch of these guys could really use some help on identifying what I have going on and the negative effects, please. Thanks all

After feeding my tank last night, I noticed some motion and took a closer look. It was a long transparent tentacle coming from the live rock. The head was wriggling around pretty good. I took video with my phone, I apologize for poor quality. Make sure to view in 1080p: I've gotten pretty...

Hey guys! Noobie here! Just signed up today. A single, small red bulb that comes to a tip has popped up in my tank (on my sandbed), and I'm not familiar with it. I was going to take a picture, but when I went back to the tank to snap a picture, it has since moved or disappeared! I'm not sure...

Is it red bubble algae? I don't see it anywhere else in the tank.

Hello, I have had my 28 gallon AIO setup for about a month now. The rocks were cycled in a plastic bin for 2 months before adding to the tank. I have recently had a bunch oh algae crop up and I want to make sure I know what type it is. I am hoping my tank is still settling in and it will go...

hi everyone, Noticed these brown spots on top of a couple trochus snails. Thought it was just brown algae so i scrubbed it a bit but it was still there. then i dipped some hydro peroxide on a paper towel to wipe and drench those spots--it just receded into crevice or pockmarks on snail shell...

Hey guys I have had this Nephthea for a little over a year. It has always had this black crusty looking stuff on the stalk, kinda looks like charcoal. I never worried about it, the coral was doing great with big open polyps So i thought is was normal, maybe algae or something. About a month ago...

I purchased a coralline cluster and it arrived with what looked like a stomatella snail hitchhiker on the side of the bag. When I grabbed it, it rolled up into a ball like you see in the picture. What are we looking at here?

Noticed these white things while doing a water change today. Anyone know what they are?

Hello. So. My tank has been established for a little over 3 months now and for the last week I've noticed this dang worm thingy. I can't see it when the lights are off, but once the day time lights come on I notice something moves quickly then hides. After a while I see it peek it's "head" out...

I'm thinking tube worm not sure they're all over all my rocks however.

Been dealing with this algae since the tank has been setup. I was hoping cleaning the substrate and doing weekly waterchanges would take care of it, but thats not the case. Can someone give me positive ID on this algae?

Hey all, Just joined and am looking for some help. I am trying to identify this protein skimmer. I was going through a bunch of stuff salt water supplies I had and came across it. Once identified, would it be too much for a 15 nano? I'm trying to avoid getting another one if this would work...