what ro/di unit is the best

[anthonys51]

ok question . will be buying a ro/di unit. any idea what one to buy . witch one does most of you guys use and do you like it and where did you buy it from.

also i am topping my tank off currently with distilled water. is that ok ?

 

[jason2459]

Buckeye Hydro
SpectraPure
The Filter Guys
Bulk Reef Supply

I would get one from one of those place. At minimum I would get a 75gpd 4 stage: Sediment, Carbon, RO, and DI stages. With inline TDS meters and pressure gauge are very handy. You can upgrade from there as needed adding more stages.

 

[dkeller_nc]

ok question . will be buying a ro/di unit. any idea what one to buy . witch one does most of you guys use and do you like it and where did you buy it from.

also i am topping my tank off currently with distilled water. is that ok ?

While it's possible to get a really questionable RODI unit off of e-bay, as long as you buy one from a reputable seller as Jason listed, you can't go wrong. A properly configured and maintained RODI is a pretty bullet-proof piece of equipment, and the brand has a lot less influence on quality than other pieces of reef equipment such as pumps and heaters.

Using distilled water to top-off is OK in the short-term, but make sure that you're getting distilled water rather than "purified water". Purified water for drinking has had substances added back to it so that's palatable for drinking (principally calcium and magnesium salts). Also, realize that some "distilled" water is actually distilled rather than being purified by RODI. That could be a problem, as copper evaporators/receivers are often used in these types of stills.

 

[anthonys51]

thank you dkeller your post was very informing