RO/DI water filter systems for aquariums create ultra-purified water
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.