07-26-2007, 08:37 PM
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If you want a constant supply of soft water then get a R/O filter and be done with it. This will make the water super soft and you can adjust the water to whatever levels you want them at. Remember also that both pH and GH swing can be bad for your fish and it is rumored that GH swings is more harmful to fish than pH.
I can not think of a better way to maintain soft water but you need to check and see what the GH andpH is from your LFS where you are getting them from. If it is not ideal then you need to match what the LFS has and slowly change it to what the fishes natural habitat would be so you don;t wind up causing pH or GH shock and killing them. Drip acclimation will help but if the difference is too high even drip acclimation might not be enough.