I bought the Aquarium Pharm. tap water filter. It says it makes the perfect water and with a PH of 7.0 I put in the drops as it says but tested it last night and PH appeared to be 6.0 in the NEW water....... How do you figure how to get it up? Put in more PH drops and if so any idea how many? It says 30 electrolyte and 15 ph drops per gallon which doesn't appear to be correct........ Ideas? Thoughts?