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How to Use Reverse Osmosis in Your Aquarium



How to Use Reverse Osmosis in Your Aquarium
In the pursuit of providing the best water quality for your aquarium, you may find that the water coming out of your tap just does not have the correct parameters for your aquarium's inhabitants. The plain tap water can even include toxic chemicals. One simple solution to this problem is to use a Reverse Osmosis (R.O.) unit to purify and soften the water.

How does Reverse Osmosis work?
Using the simple principle of applying a pressure gradient to a semi-permeable membrane, you can eliminate most of the chemicals found in the tap water and produce pure water. The semi-permeable R.O. membrane only allows very small molecules (such as H2O) to pass through it, effectively removing 90-99% of most water impurities including pesticides, arsenic and heavy metals.

Freshwater Aquariums
For freshwater applications, using an R.O. unit will provide water without General Hardness (GH) or Carbonate Hardness (KH). This allows addition of trace elements and electrolytes to match the natural water conditions of the fish we keep. The removal of the KH allows use of buffers to easily set the water's pH wherever you wish. This is great for plants and soft water loving fish like Discus and Angels.

AquaFX Barracuda RO/DI Unit Reef & Marine Aquariums
For marine applications, a 4-stage RO/DI unit is recommended to remove more impurities including phosphate, nitrate, and silicates. These undesirable chemicals affect the health of corals and other sensitive marine inhabitants as well as fuel aggressive nuisance algae growth. A 4-stage RO/DI unit with a deionization (DI) cartridge produces ultra-high quality water best for systems housing sensitive species requiring near pristine conditions.

Maintenance of RO Units
Perform necessary routine maintenance of your RO unit to ensure high quality water production and to extend the life of your RO unit. Replace sediment pre-filter and carbon block based on manufacturer recommendations or as soon as you see noticeable discoloration, reduction in production or drop in water pressure. Replace RO membrane per manufacturer recommendations or use a TDS Meter to monitor RO membrane performance. Keep in mind, the quality of your source water will determine how often you will need to replace each component i.e. areas with greater quantities of dissolved solids and impurities will require more frequent changes.

Overall, R.O. units definitely benefit your fish and plants by removing impurities in your source water. Knowing what types of impurities your water contains, helps you determine the best R.O. unit for your aquarium.

Simple reasons to use an R.O. unit:

  • Provides softened water, removing GH or KH, which allows you to adjust the pH to match the water requirement parameters of your fish.

  • Eliminates possible toxins and other unwanted compounds from your water.

  • R.O./D.I. units remove any phosphate or nitrate that passes through the R.O. unit, reducing algae fueling nutrients.

  • R.O. water is perfect for topping off the aquarium's evaporated water.

  • R.O. units easily connect to most faucets, and with the available Float Valve Kit can be automated to stop once your collection reservoir is filled.

 

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