Salty Q&A: Is RO/DI Water All It’s Cracked Up to Be?

Question I’ve been keeping saltwater aquariums for five years, and in all that time I’ve never used RO/DI water for top offs or mixing up clean salt water. I just use tap water treated with a dechlorinator / dechloraminator, and…

HM Digital FM-2 filter monitor, volumizer keeps tabs on your RO/DI system

The HM Digital FM-2 filter monitor and volumizer is a nifty tool for keeping track of when to change out your reverse osmosis and de-ionization unit’s filters. The simple digital display can track up to five stages by both time…