RO Unit removes up to 98-99% of tap water impurities
Units with RO Pumps increase water pressure to maximize production in areas with low water pressure
Produce clean, pure water from chlorinated or non-chlorinated source water. Premium three-stage reverse osmosis (RO) units employ Sediment Pre-Filter Cartridge (Stage 1) for ultra-fine pre-filtration, Carbon Block Cartridge (Stage 2) for chlorine removal before reaching the TFC (Thin Film Composite) RO membrane (Stage 3) to effectively remove up to 98-99% of hardness, heavy metals, toxins, and many other impurities. Economical and easy-to-use reverse osmosis units are wall mountable. Does not require separate flush kit - simply switch the two outlet fittings.
4-stage RO/DI unit features a mixed-bed resin deionization (DI) cartridge (Stage 4) to remove any additional impurities to produce 99.9% pure water.
Please click on "More Information" for additional features, instructions, maintenance, and troubleshooting.
Items #18786 and #18787 have 1 clear and 2 white canisters.
3-stage RO units include faucet adapter, canister wrench, TFC membrane, carbon cartridge, 1-micron filter cartridge, and 2 clear cartridge canisters.
4-stage RO unit includes faucet adapter, canister wrench, TFC membrane, carbon cartridge, 1-micron filter, mixed-bed resin deionization cartridge, and 3 clear cartridge canisters.
Pure-Flo II with RO pump includes diaphragm pump with high and low pressure switches, automatic shutoff valve, canister wrench, TFC membrane, carbon block cartridge, granular activated carbon cartridge, 1-micron filter cartridge, and 3 clear cartridge canisters.
Product water to waste water ratio
24 gpd 3-stage
14-1/4" x 6-1/2" x 15-1/2"
1 to 3
50 gpd 3-stage
14-1/4" x 6-1/2" x 15-1/2"
1 to 3
50 gpd 4-stage RO/DI
14-1/4" x 7" x 15-1/2"
1 to 3
50 gpd 3-stage RO with RO pump
15-1/2" x 8-1/4" x 18-1/4"
1 to 2
100 gpd 3-stage RO with RO pump
15-1/2" x 8-1/4" x 18-1/4"
1 to 2
Unscrew nut on elbow fitting and remove water line.
Unscrew membrane housing cap.
Insert membrane housing.
Replace membrane housing cap.
NOTE: Discard the first 10 gallons of water produced.
Slide canister wrench over cartridge canister.
Turn wrench clockwise to loosen canister.
Remove the canister.
Flush carbon cartridge with tap water for a minimum of five minutes before use.
Attach inlet for source water to chlorinated or well water supply (white tube). NOTE: To attach directly to your faucet, attach the faucet adaptor to the inlet for source water.
Route wastewater outlet line to drain (red line).
Route purified water outlet line to storage container (blue line).
Make sure all plumbing fittings and membrane housing caps are screwed down tight. NOTE: Discard the first 10 gallons of water produced (for Pure-Flo with RO pump, be sure to plug in pump).
Proper maintenance is necessary to extend the life of the membrane and the quality of the water produced. The prefilters should be replaced every six months or 3000 gallons of production, whichever occurs first. This replacement schedule is very important; however, the quality of your source water can extend or shorten the effective life of the prefilters. In locations with extremely poor quality source water, it may be necessary to replace prefilters as often as once a month. If particulates are forced through a fouled prefilter, the membrane can be damaged. If the carbon prefilter is not replaced periodically, chlorine and organic will be present in the purified water.
With proper use and maintenance, the membrane should last a minimum of one year. Following the suggestions below should ensure the life of the membrane.
The membrane should never be stored dry.
The membrane can be stored by being saturated in the RO system for up to 30 days.
If the membrane is not used for more than 30 days, it can be refrigerated for preservation. To refrigerate, place the membrane in a resealable bag with a couple of teaspoon of purified water and store in refrigerator, being careful not to freeze the membrane.
Membrane efficiency and life expectancy may be improved by flushing the membrane regularly. The easiest way to achieve this is to switch the two outlet fittings on the bottom of the membrane housing. By placing the wastewater fitting (red tube) in the purified water outlet and the purified water fitting (blue tube) in the wastewater outlet, the system can be flushed. After switching the fittings, the unit should be operated for approximately 15 minutes. After flushing the unit, be sure to use Teflon tape on the pipe threads when reinstalling the fittings in the appropriate outlets. Regular flushing (every 6 months or 1000 gallons) will decrease mineral buildup on the membrane. This is most important with source water with very high hardness and high total dissolved solids.
Trouble Shooting TIPS
Low Water Production
Low source water pressure. High total dissolved solids. Low temperature source water. Clogged prefilter.
Clean, pure water is a priority for all fish and plants. No equipment is more effective in helping create ideal water conditions as Reverse Osmosis units. Use the following chart to help you choose the best RO Unit for your aquarium system.
You may think your tap water is perfect because it looks clear, tastes good, and is odor-free. But you cannot see, taste, or smell all of the minerals, bacteria, nutrients, and chemicals present in your water. Learn how an RO Unit will help.
Please note: If you wish to ship items with this symbol by express service, additional shipping charges will apply during checkout.
Oversize or heavyweight items with this symbol ship for an additional $7.99 each. Additional shipping charges will apply during checkout.
Please note: Return of electrical equipment to Drs. Foster & Smith for exchange or refund is limited to 60 days from the date of purchase. Beyond 60 days, please contact the manufacturer for repair or replacement as covered by the manufacturer's warranty.
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