[lance cooper]

hi all I'm switching to the pole system and would like to know how to go about it I like the idea of the twin 25ltr di setup.my water ppm is 370 how often would I need to change my resin I I do it this way and would It be a good idea to use 3 pre filters.

[Stoots]

hi all I'm switching to the pole system and would like to know how to go about it I like the idea of the twin 25ltr di setup.my water ppm is 370 how often would I need to change my resin I I do it this way and would It be a good idea to use 3 pre filters.

R.O at that TDs mate, would cost a fortune in resin.

[Shrek]

About once a week , cost about £220 a month

[Robert2k]

I have a twin DI setup in my van, I use the customers outside tap to fill up once a day as I live in a flat.

TDS where I work is around 300 ppm and a sack of resin lasts about 6 weeks not a bad return of investment.

Mind you I only earn around £400 - £500 a week if you're  like all the other window cleaners on here and earn £400 - £700 per day you might need to buy more resin.

Robert

[The Jester of Wibbly]

http://www.gardinerpolesystems.co.uk/Resin_Calculator.htm

Use this resin calculator.

You do the math.

[dazmond]

I'm so lucky to have a tap tds of 028.i think you need an RO at 300+ mate. I'm using 3 - 4 bags a year(£240-£320 ) DI only. It'll cost u a hell of a lot more.