Was considering dosing my 3 year old 50 gal tank with seaklear phosphate remover. I have a dual reactor with carbon/phosban running and a skimmer along with controlled feedings and routine WC with RO/DI. Can't seem to get PO3 under .25 which is way too high. Measuring with an API kit and while it is not ideal it is measuring a significant amount regardless. Any dosing suggestions for a 50 gallon and do's/don't out there from the routine users of this product? Thanks all.