I'm new to the whole aquarium thing but after I used my test strip the nitrate is not exactly 0 but not exactly 20, nitrite is .5, total hardness is hard, total alkalinity is 80, and the ph is 7.8. We have had this aquarium with gsp for about 6 weeks and we do a 10% water change weekly. He eats frozen blood worms and Omega 1 flakes. We also occasionally put ghost shrimp in there and snails.