Just made a discovery! I dont think it was the scrubbers fault! I started home brewing a while back,and the day my corals wear dying was the same day I placed a fermenter right next to my sump in the basement! When beer ferments it gives off large amounts of co2,,,I think this caused my ph to drop like crazy! I opened some windows today and moved the beer to the other side of the basement and my corals are looking great. I will let you know in the morning how everything went...