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[geologeek]

Can some one please shed some light on my mystery deaths :huh:

I have just lost a blue chromis...he was fine an hour ago...then boom....lost all mobility, and floats around in the waves

The same happened to two pyjama cardinals...on a cycle of one a week...this is now week three

will i loose all livestock :'(

There are no outward signs...they did not even have labored or erratic breathing..they just keel over :huh:

pH 8.2
normal alk (weird test kit!)
ca 400
ammonia 0
nitrite 0
nitrate 10-20 (dsb still cycling?)

the only additive is a 5-10% weekly water change with RO/DI

Tank is 50 gal with 20 gal sump/refugium

30 kg of fuji live rock...livestock left is one chromis, humbug damsel, algae blenny and maroon clown (all 1-1.5 inch) 3 hermits, snails, finger coral, pulse xenia and bubble tip....and lastly i have noticed a yellow cucumber (homegrown).

Could the latter be the cause?


HELP!

Levi