TOP Touch for larger view Lee's Original Undergravel Filters For Aquariums up to 150 gallons. Carbon inserts for cleaner water. Now I'd like to choose a pump or powerhead. Economical Undergravel Filters. Now I'd like to choose a pump or powerhead.
Tap water is filled with all sorts of materials which are toxic to humans and to aquarium fish.
Distilled water or natural spring water at your supermarket may contain copper and lead or various minerals which are toxic to fish. Reverse Osmosis water filtratrion units utilize a memberane, under pressure, to force water to leave its pollutants on one side of the membrane and produce water free of dissolved solids on the other side. Removes Phosphate Silicate Nitrate Copper Arsenic Aluminum Mercury Cyanide and other harmful substances. Can be used on well water or chlorinated water to produce 24 or 50 Gal per Day. Units include Carbon Matric filter 1 Micron Pre-filter TFC Membrane.