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					Originally Posted by  marknash
					 
				 
				we've removed it multiple times.. and it keeps coming back.   our phosphate was at zero.. i have it written down at home here 
do you think we are feeding the fish too much?  we feed a bit of mysis and flake .. everyday.. is that too much? 
			
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Your phosphate may read Zero on a test. But as the cyano uses the phosphates to grow it will show up at zero even though you have them. Does that make sense?....lol
Its been a long day

I have also found at work that if i up the flow than it doesn't come back as fast. So flow plays an important roll.
In the end it is a nutrient issue....What are your nitrates etc reading?