Water top off

[HaZRaTTy]

I have never used any type of RO water in my reef and have had alot of success, though I do plan on getting an RO system for my next upgrade I don't have any problems.

You technically don't even have to treat your water with prime that's another story. People will give you advice to go do this, or that.

The only thing I find is that I sometimes get excess nutrients causing small amounts of red slime outbreaks but that only happens in the spring run off and the odd time have it has rained a lot.