I have a friend that is big into aquariums, 1 30 gal freshwater 1 50 gal fresh and a 80 gal saltwater. She is a go all out or dont do it kinda gal so she also has a reverse osmosis filtered (like Dassani bottled water)/deionizer to make the ultimate fish tank water. seeing that im at least going to have to drain my rad, might go ahead and replace it, would it hurt to use the deionized water? seems like i read somewhere that it will pull trace metals out of the engine, can anyone tell me different?
