help pintail guppy fry over and over
It has been going on for 4 months now. It seems they just pintail and die and only a few survive. I have a 30 gallon planted tank with 5 male an 5 female halfback red guppies. They are all big and healthy tank is cycled hardness 200 oh 7.6. Ammonia 0. Nitrite 0. Nitrate 20ish heated to 78 degrees. I feed them a variety flake crushed and brine shrimp. The fry just always pintail. I tried antibiotics kanamacyn and nitrofurazone. I tried parasite clear tabs and also quick cure. I have now moved the fry to a bare bottom ten with a heater and sponge. I dissolved 2 cups sea salt to make it slightly brackish and I dosed with malachiute green. Hoping it's a fungus and I will have cured this problem once and for all. If not it may just be genetic. It's no fun and costing me. Anyone have experience with this and no of a solution other than formalin?
And now for my next magic trick i will make my pleco dissapear!