sounds like what im going to have to do also shov. water comes out mighty cold until mid june most of the time for me. my soil grows havent gotten big enough to use a whole lot of water until recently so it sits for good while anyway.
didnt really think about the pump raising the water temp and changing the ph reading also. i expect some of it may be from the evaporation rate being increased so it breaks the chloramine and other ph buffers down faster possibly.
i like the way it works so far anyway. just gotta get the top cut out and germ up some seed and get it goin on. I should have the rdwc....hmm well im still toying with a rdwc/aero hybrid thingo, but it should be done by later next week still need to find some parts.