has anyone used purigen to clarify there aquarium water and what were the results? and also can anyone tell my why my guppies dont breed. I have 7 guppies 5 female 2 males I add fresh water approx 1 -2 gal every 3rd day , they get a mixture of flakes ,shrimp pellets, frozen brime blood worms I feed 2 times a day. levels seem to be finetemp is approx 76. what am I doing wrong??