my RO water

[padi200]

So since I have RO water, not RO/DI for now, I wonder, can I add phosphate binding media to my top off water holding container, maybe a bag of it, to help get rid of the residual phosphate?

 

[Playa-1]

The DI in the LA area would be more for dealing with Chloramine. Unlike Chlorine that is effectively filtered out with a Carbon prefilter the Chloramine that they use to treat water around here is not effectively taken out by Carbon media. So what happens is it traces pass right thru the Carbon and RO membrane and can give you a positive Ammonia reading in the tank.

I would think you would be better off adding a DI add on kit to your RO system and using the phosphate media in your tank with a media reactor.

 

[centipede]

Without water flowing through your phosphate media, it won't be very effective. If it's just sitting there in a bucket of water, I don't think it will do much.