The tanks been up since the start of May, i have 6 leapord danios, 6 black widow tetras, 3 tiger barbs, 2 clown plecs, 2 siamese algae eaters, 2 feather fin catfish, 3 peppered corys. i need a new test. mines ran out last week. But the readings were low. it's a greenish cloudyness. the filters...