[East coast window cleaning Services]

After a slog this afternoon i have run me cold fed from me loft down through the roof and into the Garden
Ive plug in the Ro Now when i tested the water it was the same as when it went in so i shut the black pipe (waste pipe) off with the lever in the pic and to my surprise 050 which i feel is fine as it was 374 when going in. Now my question is if im shutting of the waste is that any good for the unit? or im i not doing something right???

[cherubs cleaning]

i have a merlin and i have never shut the waste of.

wat is your tds


jerry