id please

Hello, good evening to all. I went to my lfs today as I realized I started seeing some red planeria flat worms in my tank. I can’t add fish atm and I didn’t want to use chemicals so I decided to go the natural predator path. The guy recommended this sea slug and I just want to make sure that 1)...

Can I get an ID on these…. Friend or foe….. Thanks and merry Christmas

Firstly, my new pipe organ frag has these strange white things between the Skeleton, no clue what they could be. Next is this weird little Grey thing on my new tubastrea And finally, i got a dendronepthya from my lfs's display sump, (he was just gonna toss it), so he gave it to me, It came...

Hey so I moved my snail (I think it’s a turbo) and hermit crab from my other tank into this one. I didn’t do an official QT, I just scrubbed the shells really well in a bowl of new + old tank water and then once really clean I dunked them separately in a new dish of RODI. I thought that would be...

Is this a Nudi? Good guy?

Curious if this is just coralline algae starting on my rock or if it is some other red colored algae/problem. It is a rusty red color and appears mostly flat but I see a few strings/hairs in one spot (2-3 is all I can see and they are very short/hard to see). A few of the pics have a...

I have multiple in my tank. Was curious to what they were, not the best picture but they’re pretty small.

hello and thanks in advanced. I have set a new tank up and it’s around 10 days old at this point. Over the last two days a huge coating of brown algae I believe to be diatoms has covered my rocks, sand and glass. however it is also covered in air bubbles which makes me think it’s not diatoms...

I was vacuuming some cyano out of my tank last night, so I got the hose into the sand bed really well in an attempt to rectify the previous owners (and my dads while he had it for 6 months) long term neglect…. i don’t know where this came from, but I saw it sticking up out of the sand, so I...

Hi, There are long dark purple algea growing in my tank (please see picture). Can anyone ID please? many thanks in advance

Can anyone ID this yellowish/brownish things growing on the LR? A short backstory, family and I went thru hurricane Michael and I lost everything in this tank (29 biocube). After the power was restored and the shops were back open I reset up tank. It’s been running for about a year before I...

Hello all .. so today bought a new wellsophyllia and i dip it in coral Rx pro .. nonetheless, after i add it it the tank i noticed its moving so i flip it .. and found this guy .. is there an ID .. good or bad? Looks like a snail. Please refer to the video

Hi everyone, I am a new reefer and new to reef2reef. After cycling my tank and adding my first fish, I thought it was finally time to take the plunge into corals. I bought a beautiful green ricordea covered rock from LFS, unfortunately though it has also come with bristle worms, and whatever...

Hello. I just got this mushroom in a trade today and they did not have a name for it. The picture they sent me was under white lights so it looked completely different from mine since I run mostly blues. Is it what I think it is or...

Hello everyone! SO, the rock in my tank has these spikey like tube things sticking out EVERYWHERE?! From the research that Ive done so far, it seems like they could be Spaghetti Worms, but ive never seen anything come out of them! Or, they could be Sand Tube Worms BUT I just dont understand...