i am havind a problem with the ph in my water. i bought a test kit to test it myself wich only reads up to 7.6, which is a med. blue color. when i tested my water from the tank it came out dark blue. i have treated it to lower it adding what the directions say(2 drops per gal), and checked it every day or every other day for a week, and the lowest it has gone is to the blue color indicated on the chart which is still 7.6. i tested my tap water that i used to fill the tank and it tested even darker blue than the tank did ariginaly. my question is how much, or how ofter should i add the ph down to the water? is everyday to much. and does that work instantly or does it take a while to change after youn add it? or another question i had is since my tap water is high to begin with, would i be better off to change the water and just use bottled water to fill the tank, and if i did that would a 50% water change be enough to get it started then only use bottled water to do the weekly water change?