I am New to fish keeping but need some urgent advice!
I set up a 90litre tropical tank on 11 Nov. 07 with plants and bog wood.
Water test on 18th Dec was PH 7.6, Nitrite 0ppm, Amonia 0ppm and Nitrate 15ppm. Temp 73f
20th Dec. Introduced 6 guppys (2m,4f.), 2 Swordtails (1m,1f.) and 2 marbled...