zoo's not opening lately??????

[dachsienutt]

I have 2 small crops of green eye zoo's that have not opened for almost a week. Any ideas why??

[Loverotties]

What are your water perimeters?

[dachsienutt]

sorry it took a few minutes. i just took new parameters.
sg 1.023
74.9 temp
370 Ca
11.2 dKh
20 ppm nitrate (how do I lower this) petty constant for a few weeks now
0 ppm nitrite

cleaned 25% tank on 2/25.
112g tank, 30g sump
150watt x 2, 10,000K x 1 & 14,000K x 1 metal halide w/ lunar lights

THANKS!!

[dachsienutt]

I know Ca is low. I just added a dose of Ca (bionic)
I use reef crystals salt.

THANKS AGAIN!!

[nobody]

im not a fan of keeping my temp that low. My tank goes to 77 at the lowest. Use a higher grade salt like red sea pro or tropic marine pro to fix that ca issue. I use red sea pro and my calc is always betwen 420-450 with no dosing. I just have to dose alk. as for the nitrates add a fuge, less fish, less food, more/bigger water changes

[TitansFan]

Have you checked them for nudibranchs? I found zoas to be closing up and noticed nudibranchs. I got rid of them by several dips in freshwater over a few weeks. The freshwater needs to be the same temp and same ph as your tank.

http://www.zoaid.com/index.php?modul...&g2_itemId=415

Oh and to answer your question on lowering nitrates ... the tried and proven meathod is water changes.