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Aquarium RO Systems

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RO Systems: AquaticLife RO Systems: Coralife Pure-Flo
50 GPD & 100 GPD. The AquaticLife RO Buddie Reverse Osmosis Systems feature a small footprint that makes it easy to place under cabinets or in limited spaces. These affordable and easy to set up RO Systems use standard cartridges and the system is designed so it's easy to replace the cartridges.
24 GPD, 50 GPD & 100 GPD. The Coralife units come with a variety of options. They can be purchased with or without the deionization cartridge and in pumped or non-pumped versions.
RO Systems: SpectraPure Float Valves
60 GPD, 90 GPD, 180 GPD, 600 GPD, 1400 GPD. SpectraPure makes everything from 60 GPD consumer units to the much larger Producer commercial units. For the absolutely cleanest water, choose the SpectraPure five-stage units. These units have two DI cartridges as well as the usual TFC membrane, sediment pre-filter and carbon pre-filter.
Float valves for topping off aquarium water
RO System Additives Replacement Media: AquaticLife
Reverse osmosis can work too well. These products re-introduce needed minerals to reverse osmosis water.
Replacement carbon, micron cartridges & TFC membranes for AquaticLife aquarium RO Systems
Replacement Media: Coralife Replacement Media: Kent Marine
Replacement carbon, GAC, 1 micron cartridges & TFC membranes for Coralife aquarium RO Systems
Replacement carbon, deionization, 1 micron cartridges & TFC membranes for Kent Marine aquarium RO Systems
Replacement Media: Poly-Bio-Marine Replacement Media: SpectraPure
Replacement media for Poly Bio-Marine Kold Ster-il Filtration Systems
Replacement carbon, deionization, micron cartridges & TFC membranes for SpectraPure aquarium RO Systems
Replacement & Plumbing Parts: AquaticLife Replacement & Plumbing Parts: Coralife
Plumbing fittings, float valves and red, yellow & blue Polyethylene aquarium tubing for RO Systems


Replacement & Plumbing Parts: Kent Marine Replacement & Plumbing Parts: SpectraPure




What do RO and RO/DI units do?
  • The TFC membrane removes calcium and magnesium (which make up general hardness, GH) and any carbonates (that make up the carbonate hardness, KH). This leaves you with truly soft water.
  • The Sediment pre-filter is a fine (1 or 5 micron) mechanical filter to trap large particles in the water, and some bacteria.
  • The Carbon pre-filter removes large particulate waste and chlorine in the water. This is especially important with TFC membranes, as the chlorine will degrade their performance.
  • The Deionization (DI) cartridge found in RO/DI units removes some other chemical compounds often found in the water--primarily nitrates, phosphates and silicates.
How do RO Systems work?
The RO TFC membrane operates as a semi-permeable membrane that is placed under pressure (from the water supply) to cause water to pass through the membrane in a Reverse Osmosis direction, producing pure, soft water.

What are the RO System maintenance costs?
The sediment pre-filter, the carbon cartridges and the Deionization (DI) cartridge will need to be replaced after about 6 months or approximately 1000 gallons of RO water produced, depending on local water conditions. The RO membrane should be good for approximately 3 years.

What types of aquariums should use RO water?
All aquariums should use RO water because tap water contains many impurities. These impurities include phosphate and nitrates, which fuel algae growth. Copper--highly toxic to invertebrates--can be leached from household pipes.

What needs to be added to RO water?
Because an RO system will remove almost everything from the water, you will need to add back in some essential minerals. Marine aquarium salt mixes all contain these essential minerals. For freshwater use, you need to add back electrolytes, as the RO water will be too pure for the fish or plants. You will also need to add some type of buffer to prevent wild fluctuations in the pH value.