Psychedelic Mandarin
New member
Hello all!
We have had a bunch of digitate hydroids in our tank for the past 3-4 months but they seem to be multiplying rather quickly of late.
They are only visible at night when they extend out into the water. So far, they don't seem to bother anything, but Dr. Ron says that they pack a potent sting to corals. I have been using kalk paste to kill them (which is difficult at night) but many are difficult to reach since their base is often located under rocks, etc.
Here is a link to some info on Dr. Ron's site:
http://www.rshimek.com/odd_critters.htm#Regular Hydroid Jellyfish
Does anyone know of any natural predators for this type of hydroid? Does anyone have any information on what types of corals can be stung (our tank is mostly Acros)? Do they crash out on their own? These things are driving me crazy!
Any help would be greatly appreciated.
Thanks!
We have had a bunch of digitate hydroids in our tank for the past 3-4 months but they seem to be multiplying rather quickly of late.

They are only visible at night when they extend out into the water. So far, they don't seem to bother anything, but Dr. Ron says that they pack a potent sting to corals. I have been using kalk paste to kill them (which is difficult at night) but many are difficult to reach since their base is often located under rocks, etc.
Here is a link to some info on Dr. Ron's site:
http://www.rshimek.com/odd_critters.htm#Regular Hydroid Jellyfish
Does anyone know of any natural predators for this type of hydroid? Does anyone have any information on what types of corals can be stung (our tank is mostly Acros)? Do they crash out on their own? These things are driving me crazy!
Any help would be greatly appreciated.
Thanks!