Are you going to do all your work using the back pack?
Definitely use a standard resin in DI cylinder, can use colour change after to let you know when resin is on way out, as colour change is far more expensive.
I think one resin changes when tds is over 030 and other when over 000.
Seems daft to me as I don't think RO water should bo over 030 but I might have got my figures wrong.
Personally don't rate Ionics but could be wrong, much of their gear is definitely overpriced though.
Yes gonna start just using back pack and barrels in van until i get a tank and varistream system set up.
Had a go on backpack before, will take a while to get used to weight, so gonna have a folding sack barrow handy for those long days.
Advantage of backpack is no hoses to mess about with with safety signs every where etc.
Wondering whether 36' is too long a pole for most jobs though, as is a weight!! even though hybrid carbon/glass fibre. But Its gonna be weird using differnt muscle for pole whatever.
The resin alone is dropping tds down to 003, and the RO alone is dropping it down to about 6. So with this sequence: Softener (recharged with salt) then to RO, then to resin, and out to tank/barrels at 000 ppm. Will buy 11L vessel with resin when ionics one packs up, won't bother buying ionics gear necessarily, unless i find some more fantastic bargains!!!
Jay