Problem with corals

[reefwars]

Originally Posted by 1bigstud

Tank has been running for about 4 yrs. using pc lighting ( bulbs less than 2mnths old) which has been quite successful in my previous system. Last time I had the alk and calcium checked at ocean aquatics they said it was bang on.
I was originally running a 450 watt halide and thought that was the issue so I switched to 2 75 watt pc bulbs.

what other corals are you having trouble with?? are they all melting away??