You should really filter your fuel a little better. I have a Jersey Modeler fuel can which has a filtered weighted pick-up and another filter on the output side of the pump. In the plane I use a BVM UAT which offers some filtering ability (But don't rely on it as a filter) and finally, I have one more filter just past the fuel pump on the output side to the turbine.

I have never noticed any contamination in the filters that I have inspected. I use Jet-A from the local airport. Algae will look like a black mass. If I were you I would use another filter between the pump and the turbine. This filter's sole responsibilty is to collect particles that are the result of pump wear. In my opinion, the last filter that is in your turbine is there as a last resort catch all filter. Also, always add a filter to the output side of ANY pump (fuel can or otherwise) as pumps do wear, shedding minute particles.

Where do you get your Kero??? Is it from a filling station or from a sealed can??? All of that grit is hell on your turbine fuel pump!!!

Kevin

Kevin