Planted Tank Guru
Join Date: Jul 2010
Location: British Columbia, Canada
Seachem Purigen - It's a clarifier, polisher, and water purifier of the highest order, unmatched by any other product in the industry. Quickly removes/rids a tank of tannins, cloudy or greenish water conditions, and produces almost instantaneous crystal clarity - all of this without adversely affecting beneficial/essential elements within the tank water, nor plant fertilizers.
An excellent, extremely reliable product whose cost is minimal given the capacity of replenishing it's efficacy through numerous possible re-generations, using a simple 50/50 bleach/water solution.
I've used it 24/7 in my planted discus tanks for several years straight. Wouldn't be without it.