i just bought one of those 5 test in one quick dip testing strip, dipped it in the water and all the pretty color came up but i have no clue what im doing. the niteate, nitrite i understand because it says safe and unsafe and im in the safe zone but i dont get the total hardness witch reads very hard-300, the total alkalinity which reads high-300 and the ph which reads alkaline-8.4. i have only cichlid(5) in a 40 gal tank with live plates and crush corral. are these reading fine?