Diadema Urchin Above*The Water Surface

martin87

New member
I'm having my urchin for a month. Today I've seen it*in the corner of the tank. It's mouthparts are*above the water surface. It's look like breathing an open air. I could count its*five sharp teeth... It did not loose any spines. Is it normal situation for that animal?

Water condition is quite well. Salinity at 35 psu; KH 7.7; PH 8,*Po4 - salifert test*sample was a clear water...; NO3* - 5 between 10; Amonia 0; Sylicate 0; MG 490; CA 640...

The problem*I have is CA... (I'm fighting with it)*Maybe this too high*level of calcium makes urchin to escape? Please help me. Any suggestions are recomended.*
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