This is my system pure and simple (just like me)
Tap water TDS tends to increase somewhat at night but during the day its usually about 75 tonight its 96.
But it goes through and comes out at the other end at 000.
I bought the system off a fish keeper, who appeared to be of anorak of prified water, he had done allsorts of mods to it, extra filters etc.
He talked me through it, all I did was remove a few extra bits and bobs your uncle.
There is a little box thing on it and when its working ok it flashes green when the filters need changing or the water quality drops it flashes red and that it.
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