I was wondering what questions to ask my local water supplier. What parameters should I inquire about? I called them about ph (7.9 - 8.0) and also hardness (9). Anything else? Will this ph and hardness cause me a lot of problems with a planted tank? I am hoping to avoid having piped in co2 or RO, but the ph and hardness seem high. Due to the large number of gallons, evaporation and water changes I will probably be using a lot of water.