"robin.gordon1" wrote in message
...
I've just purchased a 6 stage 100 GPD (nowhere near that) RO unit and have
ran it for a full day now most of that time was flushing the membranes and
the TDS readings were thus.
tap water = 210ppm
during flush = 10ppm.
after flush and tap switched to produce RO water = 11ppm.
now I have disguarded the first 40 litres of water and am now collecting
the
RO in a water butt. the reading is still 11ppm but now I keep getting
static shocks when I get near the water.
anyone with similar experiences and what readings should I be getting
before
I start using this water for water-changes.



Humm.... getting 10-11ppm product water on RO.... depend on the carbon /
sediment / PSI. What are those size of those? Water pressure have major
affect of the product water. With 100GPD, higher pressure about 80PSI range.
Low pressure will have lesser effecient which will pass more nutrient
[higher ppm].

I have 5 stage RO with the following -
1 sediemnt = 1 micron
2 carbon = 1 micron
1 membrane = 75GPD
1 post carbon = ?? do not remember at ths time.
45 PSI
Getting 4ppm product water.

From tap = 245ppm

CapFusion,...