Reverse osmosis deionization filter systems are the preferred method for purifying tap water before use in a reef aquarium. Although tap water is safe for human consumption, there are impurities invisible to the naked eye that can cause havoc in a reef tank. Algae fuel like phosphate and nitrate and chemicals like chlorine and chloramine are toxic to all manner of marine life. A well-maintained RO/DI unit will remove up to 99% of these pollutants before they ever enter your tank.
To find the best RO/DI water filter system for aquarium use, there are a few factors to take into consideration. First is how many gallons per day (GPD) the unit can produce. If you have a nano reef tank, you’ll likely opt for system rated to produce 35 to 50 GPD. For larger tanks, you’ll want an appropriately rated RO/DI filter, so a system in the 75 to 300 GPD range would be ideal. Other factors to consider, such as tap water quality and pressure, will determine how sophisticated of a system you’ll need to effectively purify your water. A booster pump may be required to make your system run more efficiently and/or chloramine removal cartridges might be necessary if your municipality uses chloramine to sanitize the local water supply.
Our team carefully selects each and every RO/DI system we carry to ensure they are of the highest quality. Our customers’ favorite brands are SpectraPure, AquaFX and Captive Purity. If you questions about reverse osmosis deionization systems or accessories, please don’t hesitate to contact our aquarium experts
for free and friendly advice. We are happy to help you select the right system for your tank and budget.