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santorini · 03-08-2008, 09:33 AM

I have tested the water:

salinity: slightly high
pH: slightly high
alk: slightly high
ammonia, nitrite, nitrate: low
phosphate: low
calcium: very low

I have done many water changes. Probably 25% or more for each of the last three weeks. 10% or more for a few weeks before that.

I have cleaned the protein skimmer frequently. I have changed my external filter's media and added some carbon. I have changed the RO/DI cartridges. I have changed the media in my phosphate reactor. I have turned up the output flow and the CO2 on my calcium reactor.

I figured that I had cleaned the water up significantly. So, I purchased a number of snails and crabs to help clean up the algae. Within one day, they were all dead.

The fish seem to be fine (knock on wood).

SO whatever this problem is: it effects the coral and the inverts but not the fish. And, it causes algae.

Any ideas?

03-08-2008, 09:33 AM	#4 (permalink)
santorini Junior Member Join Date: Mar 2008 Posts: 4	Worse than I thought... I have tested the water: salinity: slightly high pH: slightly high alk: slightly high ammonia, nitrite, nitrate: low phosphate: low calcium: very low I have done many water changes. Probably 25% or more for each of the last three weeks. 10% or more for a few weeks before that. I have cleaned the protein skimmer frequently. I have changed my external filter's media and added some carbon. I have changed the RO/DI cartridges. I have changed the media in my phosphate reactor. I have turned up the output flow and the CO2 on my calcium reactor. I figured that I had cleaned the water up significantly. So, I purchased a number of snails and crabs to help clean up the algae. Within one day, they were all dead. The fish seem to be fine (knock on wood). SO whatever this problem is: it effects the coral and the inverts but not the fish. And, it causes algae. Any ideas?