siskiou Posted June 27, 2007 Share Posted June 27, 2007 I've just discovered that I have a number of digitate hydroids in my tank, and also the common brown tube ones. Those I can pull with tweezers, but I'm not sure how to get the digitate kind. They are thin and only mainly come out in the dark. And I found another night creature that I'm not sure what it is. One had caught a small bristle worm last night. I'll try to take a pic tonight. Are there any methods of keeping hydroids in check that don't involve throwing the rock out or blowtorching it? I'm just starting to slowly get a handle on the algae and now this!(cussing) Quote Link to comment Share on other sites More sharing options...
drock59 Posted June 27, 2007 Share Posted June 27, 2007 super glue over them. Seems to get rid of most but there are always a few that pop back up. Quote Link to comment Share on other sites More sharing options...
DChemist Posted June 27, 2007 Share Posted June 27, 2007 I've always had the digitate hydroids in my aquarium- and had never had a problem with them. I'm sure others will disagree, but that's my opinion. Quote Link to comment Share on other sites More sharing options...
chewie Posted June 27, 2007 Share Posted June 27, 2007 I've always had the digitate hydroids in my aquarium- and had never had a problem with them. I'm sure others will disagree' date=' but that's my opinion.[/quote'] I had digitate hydroids in my first SW tank 7 years ago. As with most inverts they are hit or miss, and mine never did any damage. The colonial hydroids OTOH, were another story. I was never able to eradicate them while the rock was live. Quote Link to comment Share on other sites More sharing options...
Nyles Posted June 27, 2007 Share Posted June 27, 2007 same here, no issues, I have in the last two months really cut back on feeding and they have dissapeared. Not saying you should attempt that but an option, maybe tonight I will peak in there and see if there are any left. Quote Link to comment Share on other sites More sharing options...
impur Posted June 27, 2007 Share Posted June 27, 2007 They seem to come and go IME. I had a bunch, but they have been slowely disappearing. When i find them i superglue over them. Quote Link to comment Share on other sites More sharing options...
siskiou Posted June 27, 2007 Author Share Posted June 27, 2007 Thanks! I've had the colonial ones in my 20H for years, and they've multiplied quite a bit in two areas, but not really a problem. I only have a few of those in the 120G and will pull out one small rock with the majority of them, and pluck the others. I'm more concerned about the digitate, but read they sometimes bloom in an aquarium and then just disappear again. Can't cut the feedings because of the anthias. And I tried taking a pic of the sand-dwelling things that only appear at night, but no luck. They are the color of the sand, and the flash made them almost invisible. They look like they might be an anemone type, or hydroid. They have a "fleshy stem" with tentacles in a circle, about an inch long, sweeping the sand. When I tried to pull one out, it disappeared in the sand in the blink of an eye. There are quite a few... Quote Link to comment Share on other sites More sharing options...
dsoz Posted June 27, 2007 Share Posted June 27, 2007 They have a "fleshy stem" with tentacles in a circle, about an inch long, sweeping the sand. When I tried to pull one out, it disappeared in the sand in the blink of an eye. There are quite a few... Could it be a spaghetti worm? Try to get a pic, but turn off the flash (most cameras can do this). If you can set your shutter speed, increase the time that the shutter is open to compensate for the low light. Also spotlight it with a flashlight (with a red filter if you have one). It takes three hands to hold a flashlight and take a pic, but you can do it. dsoz Quote Link to comment Share on other sites More sharing options...
siskiou Posted June 27, 2007 Author Share Posted June 27, 2007 I wish they were spaghetti worms, but the picture I've seen of those look different than what I have. On mine, the tentacles look more like anemone types, clear and relatively thin, but with white speckles in them, and not quite as long as the spaghetti worms have. I'll try another picture in the next few days. Wish I had a tripod for the camera. Quote Link to comment Share on other sites More sharing options...
impur Posted June 27, 2007 Share Posted June 27, 2007 I have those everywhere too. You've seen my tank, all my corals are on the sand (laugh) I haven't seen them bother the corals at all. Quote Link to comment Share on other sites More sharing options...
siskiou Posted June 28, 2007 Author Share Posted June 28, 2007 So, your's hide during the day, too? Have you come across any info on them on the net? Quote Link to comment Share on other sites More sharing options...
DChemist Posted June 28, 2007 Share Posted June 28, 2007 You are describing a Corallimorpharian, Pseudocorynactis sp., also known as a ball corallimorph. I wouldn't worry about them. I fed one in my sandbed for awhile (until I got bored with it). Quote Link to comment Share on other sites More sharing options...
impur Posted June 28, 2007 Share Posted June 28, 2007 They hide until i feed. I haven't even looked them up, i think they are cool and seem to help keep the sandbed clean. Quote Link to comment Share on other sites More sharing options...
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