The Planted Tank Forum - View Single Post - Raising Phosphate Level
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post #4 of (permalink) Old 12-28-2012, 05:05 AM
Planted Tank Guru
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Join Date: Dec 2003
Location: The swamp
Posts: 13,588
The test should read at least 5-6ppm PO4 after dosing, say 1 hour etc.
I dose 1 tsp 2-3x a week on my 180.

Tom Barr
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