sponge

Hi, Recently had what I believe to be some sponges popping up in the tank and they’re spreading quickly. The tank is 18 months old and there’s signs it’s starting to mature and the corals are doing well, I run a simple soft coral tank, 90G display. I’ve done a little research on sponges and...

Long established tank, this one rock has development this green algae and the other some kind of black (algae? Sponge?) what are they and how can I get rid of them? Root cause?

Hello, was inspecting some frags because I’m kind of OCD. I don’t have any pests in my tank as far as I can tell—except maybe THIS?! What is this? I used to think this was just a cutting mark where the piece was fragged but it never changed color, never got covered in the brown/green/purple...

The ATO in my nano overflowed the tank, and this is why: Can I feed this stuff to my watanabe angel in my 90g by including it in the frozen fish food mix i make with a food processor? If so, do I need to rinse it or clean it somehow before adding it?

Hey guys! I woke up this morning to a white sponge growing under our torch coral and I was wondering if it was harmful and should be removed :)I've attached a photo. Thankyou in advance!

Hey guys, new tank set up and I got this piece of live rock from an LFS. It has what looks to be so much old growth on it. I’m assuming the porous encrusting spot is sponge but what else is on here? Can anyone help ID what this stuff is. I found it in a giant bin of live rock and thought it...

Hi everybody, I set up and started (4 days ago) My first reef, today i noticed this 3 things, what are they? Are they “reef safe”? (Last pic i reefer to the “eyebrows” coming out of the rock). Thanks everyone, and nice to meet you all!

Hello Can anyone tell me if this is a good or a bad sponge? The Black one. It is at the base of my trachy, so dont Think i Can move the coral away from the sponge and it is my favorite coral 😬

I have this dark brown/black algae? On my rocks. I’m pretty sure it came in my system from a fragpl plug. It is encrusting and doesn’t come off easily when scraping. It does feel a bit soft to the touch but it doesn’t seems to be a sponge as it is not plump or does have any holes or intake on...

Any idea what this is? It’s really dark purple with black spots. What’s throwing me off is the fact that it’s shiny and not matte like most sponges. It’s just slightly smaller than a plum.

Hi, I’m a bit puzzled by what’s growing in my tank. I asked my LFS, they could not identify it so they suggested to post here. My tank is 3 months old but part of the live rocks I used are over 10years old from a previous tank. After about 2 months, « green things » started growing on my old...

So I noticed this blue squishy substance attached to the bottom half of my snail’s shell. The top is covered in coraline algae. After researching for quite a bit, I am now convinced that it may be some sort of blue sponge.. maybe a plated blue sponge ? Anyone have a clue?

Hello everyone! I'm relatively new having a fish tank, let a along a reef tank! I started my tank around a year ago, but have only recently started to populate it with more corals and fish. I've read through some of the different guides on hitchhikers and those were all super useful! Thanks to...

Hello! I noticed this white blobby stuff in my rock cave about 6 months ago, but couldn't find much info on it so I cleaned it out to be safe. It appears its back now though, and after doing some more research it sounds like it could just be sponged/filter feeders? Posting here to get...

Is there a sponge that is reef safe? Meaning not competing with coral or becoming a nuisance for equipment and maintainence? Something that doesnt encrust and could either be used as a nice display piece or potentially in the sump with some live rock and miracle mud? Am I thinking too hard on...

these fleshy things have been growing on a piece of live rock that came from an lfs. The rock has only been in the tank a little over a week. They haven’t spread but appear to be getting bigger! What are they?

Anybody have any input on removing or reducing this yellow sponge? Surprisingly very little info on it on the internet. I read someone say that it can take the calcium and carbonate from rock and cause it dissolve. Well, I have it on my dragon soul torch colony stalks and one day one stalk...

Hello please help me identify this on my GSP coral. It doesn’t seem to bother my GSP too much as it still fully opens up during the day. But it’s white and semi transparent. Looks to be firm and doesn’t move with the current. Web like appearance.

Never seen one quite like it anyone can ID it came in on live rock rubble it moves , it has two small holes on each end - it is soft and squishy like a slug / snail / anemone and I have seen it squirt once or twice - looking to figure what it is if NPS or a pest or a fish eater Also anyone...

Hi all, I'm a new reefer and I have a new reef tank and its definitely in the ugly stage. I have about 4 of these weird whiteish growth on my rock work and don't really know what it is, a few people said it is some kind of sponge but I just want a second opinion on here. Can anyone help ID...

Barely had these ponies for a month and I am realizing I miss SPS too much. Getting rid of everything in the tank. Having a bit of a GHA issue. I got rid of my turbo snails because I really wanted to keep the blue hypnea algae. I’m pretty flexible with pricing. There are three of the bigger...

Any idea what these gray looking splotches are on my rock? The left-most one seemed to have moved from underneath another rock- possibly some kind of invert?

Curious as to what all these different critters growing on live rock in my NPS tank are? I know some are sponges but I’ve included pics of a few I’m not sure of. I’ve seen most of it here and there before but I feed my NPS tank consistently so I’ve noticed new growths popping up everywhere on my...

I've been getting this stuff in my Fluval Evo 13 back chambers for a while now. All three of them. This stuff kind of grosses me out because it looks like sunburned skin with hair follicle goose bumps :face-with-hand-over-mouth:. Lately it has been spreading into my display and is growing...

Curious if anyone has seen these sponges before. The large grayish white sponge is the same color as a pineapple sponge but much larger at 6” x 3” underside of rock. I acquired this rock from lfs. I saw what I thought was grey putty on the underside of rock and turned out to be this sponge. The...