Top Off DIY

[Johnny Reefer]

I get from talkin' to my LFS that not only has it been done but I think it is fairly common place. Although, maybe not that common or the direct sump feed idea would have been talked about more on this board.
Anyway, much of how it would exactly work is unclear to me, (I'm no engineer of any kind and I've never dealt with RO systems before), but I'm told it is possible. One other thing that I want to do with mine is set up an in line additive drip as well. I'm told that will also be possible.

Cheers,