water

I just bought my first RO/DI system and I am wondering how do I know when to change filters? How many gallons will I get out of my system before I need to replace my filters? This is the system I bought. Aquatic Life RO Junior 4-Stage Reverse Osmosis Unit 100GPD...

Hi everyone. Looking to setting up myself a mid sized reef tank this holiday season. Doing a ton of research at this time, and planning on picking up various components over next few months. Got into a discussion with a buddy of mine recently regarding water. He says that to fill a new...

30 gallon tank, set up for about a year, just started having brown algae (diatom?) problems a few months ago, most likely due to using tap water. I have been using RODI for more than a month (I learned my lesson!), but the brown algae isn't really going away, it is still covering all my sand...