I'm based in Cape Town and recently I bought the following from https://www.marine-aquarium.co.za:
Two pass TDS Meter
Digital TDS meter
I've installed the Two Pass TDS Meter before and after the membrane and all seems good, the Two Pass TDS Meter reads about 90ppm inlet and 0ppm...
Hi all :)
So our tank has been up and running for about 2 years now and for that entire period I have been buying RO/DI water from my LFS.
Now if I do the basic math, I could/should just have bought an RO unit to start with as it would have paid for itself.
Tanks is about 250l and looses about...