On Thu, 15 Mar 2007 10:48:13 -0500, "Ann in Houston"
wrote:


Watch the hardness as rain water can make the water too soft and even acid
depending on where you live (acid rain). Also it has no buffering
capacity. A PH crash can kill all your fish.

What do you do after a heavy rain? Large water changes?

Check your ammonia & KH, if KH is low and ammonia is 0, add baking soda.
~ jan