After reading in another thread about upgrading your bulk reefs RODI units output via their 150 gpd add on unit ,I decided that for $60 that might be a heck of a buy,..at least for me.., normally, I'm doing somewhere in the neighborhood of a 20-30 gal pwc weekly and probably losing another 100 + gals down the drain each week.
I currently have theirs 5 stage 75 gpd unit,..by reading all the hype and the ton of user reviews regarding this add on ,.. It'll make twice the amount of useable water faster and with only something like a 1/1 waste ratio.,so for me, that'll mean larger PWC's weekly with less time and lower cost .
Sounds like a winner to me,...