If you are planning on venturing into the world of saltwater aquariums then you will quickly learn about the necessity of a reverse osmosis unit. Reverse osmosis is essentially a filtration process that removes large molecules from everyday tap water, such as minerals and other impurities leaving you with a pure form of water suitable for your saltwater aquarium (not for drinking!).
✅ Best GPD Grade Commercial Tankless Reverse Osmosis RO Water Filter System
Great system. Very fast even without a reservoir. – Great product. Super easy to install. The new system works very well. The pump was a convincing feature as it maintains a steady water flow compensating for uneven water line pressure. The RO system is used for drinking water as well as the ice maker in our refrigerator (ICEKkit). Product support is very good (responsive)
✅ Best Undersink Reverse Osmosis Water Filter System
Easy install, Great water. – Followed the start up procedure and actually didn’t see much black carbon during the flush despite what the videos say. Perhaps they’ve upgraded the filter. Ran the tank out twice as per instructions and let it fill a final time. water pressure once the tank is full is great. You can fill a large pot in just a minute or two. We decided on the permeate pump option (black cylinder front left) to reduce waste water.
✅ Best Portable Countertop Reverse Osmosis Water Filter System
Worth every penny and more – This countertop RO system is perfect fir apartments or situations where you can’t install a RO that has a holding tank. For those who want to understand where the waste water comes out, it flows out of a special outlet that is part of the adapter that replaces your faucets aerator. There is a lot of waste water (“brine”). The systems are designed generally to give you one part clean/filtered water to two or three parts waste water. It’s just how they work. Collect the brine water in some gallon jugs and use it on your plants or something if it bothers you to waste so much water. The RO can only filter as fast as the water pressure will allow
✅ Best 5-Stage Reverse Osmosis and Deionization RO/DI | Aquarium Reef Water Filter System
Good quality filter – The product arrived quickly and was packaged well. The company sent emails to confirm my request for a shut off and flushing valve. It came with almost everything needed to install it. The system came assembled
You may choose to utilize your reverse osmosis unit entirely for the production of the water for your saltwater aquarium. You may however be using a fresh source of saltwater however a reverse osmosis unit will still be necessary for those weekly top-ups caused by evaporation. For the purpose of a water change your treated water can be mixed with a suitable salt mix, I have had good results with red sea coral pro however there are many options out there.
Don’t skimp on a reverse osmosis unit and make sure you get at least a 4 stage filtration unit. Anything less may jeopardize the quality of the saltwater aquarium and you may encounter increased algae buildup and possible red algae. Trust me your saltwater aquarium and livestock will benefit from good quality water. The prices of reverse osmosis units increase with increased stages of filtration and higher output rates. Installation is as simple as placing near a water source and attaching via various tap connectors, much like washing machines, etc.