RO/DI water users - I gotta a question

[broomer5]

For those of you that use an RO/DI water unit - what if any buffers or supplements do you add to the RO/DI water before using it for top offs ?
Since I've started using it a couple months ago, I am seeing a slight decrease in the pH.
Appreciate any and all comments.
Brian

 

[nm reef]

Not sure if this will help you or not.....I use only ro/di for all top-off....I add seachem products as follows
seachem reef builder&reef advantage on a rotating basis...(approx 1 gal per day with 1 tablespoon of additive per gal)
once a week I top-off with 1/2 gal of water & 1 teaspoon of seachem reef buffer(normally on Sunday afternoon
started using the buffer once a week for same reason you are asking about.....I was seeing a slight decrease in ph.......this product has me stable at 8.3 and its been stable for several months now

 

[broomer5]

Thanks for reply NM reef
I will consider your method as one of my options. I also prefer to use Seachem products over other brands I've tried.