david pinder
02/04/2010, 11:04 PM
My 1800 gal reef system been doing well for 18 months and I have some how stumbled. probably some 300 corals and 120 fish. Less than 20 fish are large most are small to keep down bioload. Everything been doing great and growing. 12 days ago had solatubes installed over tank. They work great as far as I can see. Its been cloudy here every day since installation but am still running 70% of my lighting. A few days after installation I started noticing some distress on a few corals. Had 4 lps that opened up about a foot wide everyday they quit opening I finally moved them to another tank this morning to see if they improved. Had 5 sps start to bleach 2 died quickly the other three seem to be improving. this out of maybe 180 sps specimens. all these were in the same approximate area. all three gonipora have closed three days but are opening sporatically now.. red bubble tip was getting ready to slit now hardly opens at all. also in the area of sps fatalities. Lps were 10ft from these deaths, Fish seem to be doing fine though I did loose an 8 inch orange shoulder tang a couple of days ago, first fish Ive lost in about 3 months. my parameters are. 4.5 alk,, 8.25 ph,,, .02 phosphates,,, 470 calcium,,,, 1.25sg,,, o ammonia,,,, .98 strontium,,,, 0 copper,,,, 1000 magnesium, what am I missing here.