My tap Ph is between 8.4 and 8.2 my tank ph is 7.0ish. Ive got the same decor as I always have in my tank. Any ideas why there so different. Also right now I'm meding my tank with pimafix. This will be day two, treating some fungus on my Oscars fin. I lost my Jack dempsey yesturday and a clown loach today. Don't know why, my readings are were there suppose to everyones acting good. Just wondering about this Ph difference dont know if meds make a false reading or what.