Hello,
for my second 75 gal reef aquarium (previously was a fish only set-up), I removed all old sand/decoration (which was copper treated 10 years ago), changed most of water, installed 80 pounds red sea live rock this summer.
As green filementous algae began to growth a few weeks after, I put a ursin (Echinotrix calamaris) in october. It was fine and ate well until two weeks ago where it suddently go into a crevice and stopped moving. Spines are not depressed, just it don't move or eat, and anus is not prominent anymore.
Density is 1.023, temperature 26°C (79°F), altough I had a heater problem and temperature was a bit lower at 23°C (73°F) for about 2 weeks. I use kalkwasser to compense evaporation. There is no nitrate/phosphate/silicate. There is a good water circulation (4 pumps, about 1400 gal/hour).
Does someone have an idea ? Sick, ate toxic algae, parasitic,... ?
for my second 75 gal reef aquarium (previously was a fish only set-up), I removed all old sand/decoration (which was copper treated 10 years ago), changed most of water, installed 80 pounds red sea live rock this summer.
As green filementous algae began to growth a few weeks after, I put a ursin (Echinotrix calamaris) in october. It was fine and ate well until two weeks ago where it suddently go into a crevice and stopped moving. Spines are not depressed, just it don't move or eat, and anus is not prominent anymore.
Density is 1.023, temperature 26°C (79°F), altough I had a heater problem and temperature was a bit lower at 23°C (73°F) for about 2 weeks. I use kalkwasser to compense evaporation. There is no nitrate/phosphate/silicate. There is a good water circulation (4 pumps, about 1400 gal/hour).
Does someone have an idea ? Sick, ate toxic algae, parasitic,... ?
