[Ian101]

I have a single 4040 on a 50/50 split.

If I was to get a second 4040 is it just a case of connecting the 2nd 4040 up to the waste from the 1st 4040 ?

i think that makes sense 

[richywilts]

ive been thinking the same sick of wasting all that water down the drain

[dave0123]

you can re-circulate the water with one Ro membrane from the waste pipe