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					Originally Posted by  Amadod2
					 
				 
				i didnt know those things would cause them to bleach. i will do some more tests and post the results ASAP 
			
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 I had most of my colony bleached/stn from the bottom after a short getaway. I did a test right away and my NO3 and PO4 were all 0 with Hanna Ultra Low Phosporous and Red Sea N03 test kits.
I was running ULNS that time, I noticed a thick transparent slime on my sump evident that the bacteria stripped off my tank.
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					Originally Posted by  Wheelman76
					 
				 
				What test kits are you using for po4 and nitrates? If they are truly 0 , then that's not good. If your corals are starving then that could give you the bleached appearance you're seeing. 
			
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