is a ro osmosis system okay for a reef tank?

[James Black]

new to saltwater but not aquariums. wondering if a ro osmosis system is okay for a reef tank.
Here is the one I'm thinking about:
Do you think it'll be fine?

 

[dbowman5]

it would work, look at the size of your tank and how much you expect to do water changes. the two issues are speed of treatment and capacity of the media. the first will tell you how long it will take to make the water you want. the second will tell you whether it is economical to replace the filters and resin. look on BRS or Marine Depot to see how many gpd are produced, and expected life of media and replacement costs. think printers that are inexpensive but the ink is expensive.

 

[ichthyogeek]

Most people utilize RODI units for their reef tanks nowadays. The specific one you're looking at is cheap in the short term, but the costs add up quickly over time for that specific unit. Most of the standard ones (3 cans in a row and one on top) are more expensive in the short term, but are cheaper in the long term.

 

[X-37B]

Look at the BRS 4 stage unit.
I bought one used for cheap and replaced the 3 filters.
It makes around 7-800 gallons before needing new 3 stage filters on my city water.
Cant go wrong with that unit.
Also ro/di water with a tds of zero is what you want for all makeup and top off water.