hydroids

Hello fellow reefers, I need help with a identifying if this hairy growth on my acropora since day 1 and I ignored and now at the base which seems like algae. The zoa has something different, has had these since day 1 (removed with tweezers) and grew back. Not sure if hydroids or aiptasia...

I’m thinking this is just green hair algae and some diatoms, but just figured I’d check with some people who are more experienced. I also have hydroids which appeared two days ago. Any concern with them? I was told they would go away on their own?

Hey all! Relatively new to the hobby with less than a year of experience. Noticed my lepto wasn’t looking too hot and shortly after, I noticed these guys hanging out on the underside of the frag. My searches through the forums lead me to believe they’re hydroids, but I was hoping someone with a...

Really curious what these are. I've searched the internet on and off endlessly over the past few months to no avail. One or two has turned to a couple dozen and I'm wondering whether I need to take action. They haven't died off like pineapple sponges usually do. They look like a cross between a...

Hello all, I have a new tank with no inhabitants. I had some red ogo I rinsed well and kept in some fresh salt water for a week or two before adding to the tank. I didn't see anything on it and thought I'd be fine. Nope. I now have literally thousands of these crawling hydroids. They're the star...

Does anyone know what size bristle worm the bumblebee snails eat? Has anyone SEEN them eat a bristle worm? I’m sure my big guys in the front won’t be effected, but just curious where they’re snacking.. I used to find a few tiny bristles in my filter fiber (that I would pick out and throw back...

I had a friend that is getting a new tank, so had to get rid of a lot of his corals. Some of his zoas have feather dusters, which I’ve heard are healthy for a mature tank. These pink cat eyes are the only corals that have these. They’ve been in my tank for about a week and have now popped up...

Hello fellow saltines, I just discovered these guys on a tiny dark section of my rock. It's dry rock. They are very tiny. In doing some searches I think they might be hydroids. If they are can I pull the rock and scrub them off. They're kind of pretty and quite hypnotic watching them with my...

Can anyone plz help me ID these? these are two separate tanks. Ugh I just finally got rid of nearly all of the vermitid snails and digitate hydroids and now I have to deal with this :(

So our frag tank is just filled with detritus, algae, hydroids etc. We failed to dip the original frags which was the downfall, new ones will be dipped in reef primer and lugols, but how can we clear the tank of all of this? It looks disgusting struggling with phosphates, calcium and alk...

Hello, I work at an aquarium for starters. We have a coldwater seahorse tank (63°F) with nothing else in it. The tank has a ton of these anemone like guys. They look to be potentially colonial? It doesn't seem to bother the potbelly seahorses at all! But when I scrub the tank they seem to be...

I’ve begun to notice 2 new organisms slowly appear on my live rock in areas of low light. tank is a little over a year old. Attached are 2 pictures the organism that is in the pic with one circle, I thought at first was a small feather duster but the frill ends do t seem to retract when...

Does anyone know if branching hydroids are capable of using free form amino acids, fatty acids, and carbs such as reef energy? If not, what EXACTLY do they eat? Everyone I have seen says they eat coral food and that is not helpful. They normally stay on one rock in my tank but recently have...

Hi i have found some if these in my tank and wondering what they are. I have been told they look like hydroids. Any help is greatly appreciated!

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...

ok so i picked up a frag and it had some hydroids on it so i covered that entire area with superglue here’s a picture i’m just wondering if this will be enough to kill them

I have these growing under a live rock which cannot be taken out of the tank without disrupting the entire aquascaping. Similar structure seen on a Zoa colony one night which was scrapped out of the zoa with a scapel outside the tank. Tank is 5 month old with parameter within normal range...

ok so now that i look at it will hydroids respond if i blast them with water because if they do i don’t think i have hydroids and i just sold everything for no reason and i could’ve kept my tank without getting everything that i just bought for my new 20 gal

ok so my duncan was closed for a few days i was like oh that’s fine then i noticed white stringy things and they retract when touched now i know they are hydroids and i know blah blah terrible spelling no commas i’m kinda in a rush atm but here’s what i did i took my turks- baster thing filled...

Got these things hanging around the corner of my tank. Can't tell if they're hydroids or something else. Can anyone help ID?

Hey guys so I’ve noticed some stuff on a zoa frag of mine and determined that they are hydroids, what can I do to fix this problem? Do I dip the frag or something? I kind of isolated the frag tonight on my frag rack because it has started to spread on my rocks any ideas or suggestions are...

I’ve been told by some they’re pods & some say they’re hydroids. Can anyone help confirm what they are & if they’re good or bad. Should I be worried & do I need to get rid of them? If so, how? Sorry the photo isn’t the best, but it was the best I could do. They’re all over my tank glass.

Found these on an older piece of live rock that was given to me. Tank is 2 months old and the suspected hydroids are not spreading. Moved the rock to quarantine tank just in case. Any ideas on I'd? They are tiny and evenly spread out on the rock.

Sorry for the blurry photo, it was the best I could do. Zoa is actually on the upswing. Acro is new. I'm thinking I may have some hydroids to contend with. Any chance these guys are feather dusters or something less problematic?

In past I had 3 outbreaks of these hydroids, they just to hard to kill 3 times I’ve nuked the tank with febenzadole but somehow they always get back stronger. There isn’t any known predator available in the hobby right until now, only a few nudibranches eat them but not available for us. I...