I've got a 155g tank with about 90lbs of live rock, no corals, 2 paired clowns, 1 6 line wrasse, 1 yellow gobey, and 3 yellow tangs. My calcium is high and I can't seem to get it down. About a 9 months ago I started dosing calcium to prepare for corals but after 2 months of the required dosing, I found my calcium to be 550+. So I stopped dosing and did my normal 20% water changes every 2 months (tanks been established for 4+ years, those are my normal change cycles)....come December, after 3 months of no dosing and wc's, my calcium is still 500+. Now I do a 50% water change and no dosing. Still high.....4 months and 3 water changes later, still 500+ calcium level....I'm frustrated. I use an R/O system for my water (allbeit I haven't changed the cansiters in a long time), I use Oceanic Salt Mix for my salt and use the required buffer/am-quell (sp?) to get the levels correct. Saltwater Aquarium Salts: Oceanic Natural Sea Salt Mix
I haven't tested my tap water or water from the R/O unit for calcium, but what could be causing my calcium to stay so high? I figured after 3 or 4 water changes it would have come down quite a bit, but nothing yet.
Any ideas?
I haven't tested my tap water or water from the R/O unit for calcium, but what could be causing my calcium to stay so high? I figured after 3 or 4 water changes it would have come down quite a bit, but nothing yet.
Any ideas?