My own analysis of processed skimmate of a heavily fed tank revealed nitrate concentrations of more than 200 ppm, which was about 20times the concentration of the tank water. Phosphates, however, only showed twice the concentration of the tank water, 1 ppm. So, this specific skimmer in this specific setup was much more effective in removing nitrates (or to be more exact: organic substances that were turned into nitrates by bacteria) than it was in removing phosphates. Results of other tanks may vary (the ones I tried so far were similar), but can easily be checked by measuring nitrates and phosphates in skimmate. The skimmate should be kept warm (25°C) and be aerated for about a night or longer to give the bacteria a chance to turn proteins in the skimmate into measurable substances (nitrates, phosphates).
Skimming can potentially help you to remove phosphates, but if you want to know how much help it exactly provides, you have to analyse the skimmate. For high phosphate values it is unlikely to be a very big help (removed organics typically do not consist of very much phosphate), at least I have yet to measure really high phosphate contents in skimmate.
qui dice che lo ski non toglie fosfati , o ho capito male ?
a fappio , in tutti questi anni pensavi che lo ski ti togliesse i fosfati .. e invece erano i batteri a ciucciarli

e il ferro ? -ROTFL--ROTFL-
alex milan 80 , co sto link che hai messo hai fatto infartā il poro fappio hahahahaha

