Home RO Unit good for RO top off?

[MTsquared]

Just had my plumber install a whole house water filter. We also installed a Watts Premier 5 stage RO unit for drinking water. Can I use the RO water in my reef tank for top off and to make saltwater for water changes? I don’t see why I wouldn’t be able to but figured I would check with you guys. Thanks in advance.

 

[MTsquared]

Here is a link for the RO unit:
https://www.premierh2o.com/collecti...ucts/wp5-50-five-stage-reverse-osmosis-system

Here is a link for the whole house filter:
https://www.homedepot.com/p/GE-Whole-Home-Water-Filtration-System-GXWH40L/100669051

 

[redfishbluefish]

Drinking systems typically have a 3 - 5 gallon reserve tank that is refilled every time you draw water. So every start up you get breakthrough TDS resulting in this tank water having a level of dissolved solids. In addition, there is no DI on this system to remove that last bit of TDS.

That said, using a three way valve that diverts RO water to DI resin can easily be attached to your unit to make tank water.

 

[MTsquared]

Ok interesting thanks for the info.