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Water treatments

I would like to start a daphnia culture, but I have a problem with my tap 
water. It is VERY hard, 34 GH, and alkalinity higher than most 8 KH. I 
dilute the tap water with RO water 1:1. Also, the city adds chloramine to 
complicate things.

What is the best thing to use for removing the chloramine from the water 
for use in culturing daphnia? Sodium thiosulfate?

Douglas Guynn
	dguynn at nwol_net

The Ancient Greeks were 100% correct about this concept: He who refuses to 
participate in self-government runs the risk of being governed by a fool 
greater than himself.

"They that can give up essential liberty to obtain a little temporary 
safety deserve neither liberty nor safety." --Benjamin Franklin

It was not a stunned silence that the world heard.  It was the quiet 
meditation of a warrior.