[I have stumped everyone at my local pet store. i have a 55 reef with a few fish. All of a sudden every thing is dieing off. I have lost 6 different fish,3 heads on my frogspawn, 2 on my torch, and now i have ich. We have checked the water and it seems to be fine i just can't get the ph to 8.3. I have been using seachem 8.3 buffer every other day and i am still not haveing any luck. I hope someone can send some new ideas on things i can try.]