Rainwater good for what?

[deeishealthy]

You can get ro units relatively inexpensively now. About $100 on ebay. But unless you get an ro/di unit, it won't remove minerals.

Was that English?

[deeishealthy]

And HOLY BANANA FEATHER, Batman. Acid rain exists! I'm not taking Google's word for it, though. I'll get a liquid kit. Thanks for the info, I really didn't find much information online.

[deranged chipmunk]

sorry Dee. ro=reverse osmosis. and ro/di is reverse osmosis/deionization. water purification at it's finest it basically, for lack of a better word, sterilizes the water. you can actually buy ro water at most well stocked reef shops.