Tap or Filtered Water for a Reef?

[axe_man16]

I would say that everyone on here will tell you RO/DI only. There are people that have used tap water and were lucky enough to get away with it, but for the price of an RO/DI unit (<$300) I would never use any other source of water.

It may be fine for a while using tap water but you will get alot of algae growth and eventually the dissolved sollids will build up and likely kill valuable corals and probably fish.

So use RO/DI from the start! Hope this helps