I have a chiller running keeping my res at 68 degrees. I am running the full line of canna coco at around 650 ppm. Why is there algae/brown slime all over my pumps and lines every few days? I run mammoth P too but I have been reading people had no problem for up to 10 days with that in their res... I have it chilled with a 300 gph waterfall coming out of the chiller. I keep cleaning it every week or so and its a pain in the ass. Is there something I can run along side the canna nutes that wont harm the enzymes and bacteria? it looks like a brown slime that when I empty my res I can see is all over my lines and pumps. Will something like florakleen kill this bacteria? I'm due for a flush anyway..