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max level of po4

I'm still pretty much a newbie, but have enough knowlede to know that po4 
alone does not cause algae. Tom frequently asks how much is too much po4? 
Well here is my experience. About 8 months ago I set up a 30 long 110wtt cf, 
flourite sub, diy co2 and still dosed my ap perfect ph 7 ( before I learned 
that it was a phosphate buffer) So I tested for phosphate and it was off the 
richter scale, but I had 0 algae. I can't tell you how many 50% water changes 
it took to where I could even test for it. After I got it down to where it 
was supposed to be and quit adding the buffer, is when things went south. I 
now add about one dash twice a week( I use the spoon from my lamotte test 
kit) that brings me up to the _recomended_ range. Imagine what it was when I 
was adding 3 huge scoopfuls of this stuff- and there was no algae whatsoever 
I'm convinced it's way more than high p04 levels that cause algae

Jeff Vamos
Cessnabum1 at aol_com