Originally Posted by
Robdog696
http:///forum/post/2608663
I hate to disagree with you. Some people on the boards I can't wait to disagree wit. LMAO! I think me an my purple tang have at least one thing in common. But I've always agreed with your posts... until now.
I started in the hobby using tapwater. Cycled my tank with it, did water changes with it, mixed my own salt with it, and even used it for my top-offs. Never had a problem. In fact, I had better success than I am currently having with LFS bought "ro water".
Problem is, I moved. After I moved I continued to use tapwater. I started having some serious diatom and algae problems. Turns out the water was the culprit. Even now, I will use tap water to do a top-off if I don't have a jug of ro handy. I'll have a two day diatom bloom, but I've never lost any livestock because of tapwater.
In the end, it all depends on where you live. Some places have a great water supply and others cannot be trusted. Obviously, given the choice, RO/DI is better. But when that option isn't available or the finances are tight this, in my opinion, is one corner that CAN be cut.
I didnt say it couldnt be done..I said "unless your tap water is pure" (meaning without all the impurities MichaelTX stated) then I would go with RO/DI. I wish I was fortunate enough to have nice pure water..but I had to get a RO unit. I know there are people on these boards that have used tap water and never had a problem,they have very high quality water from the tap.