the 30 inch is 8 litres, absolute rip off mate!!!!!! buy a proper blue vessel and get a 25 sack of resin for the same price as 1 of those
Yep, im changing to a 11ts vessel. That is my only complaint about ionic, is the TDS colour change cartridge is not up to the job. Mine go's brown in 3 weeks, then in a day or two the tds is 001

still ok to clean but not for long as i replace mine at 003. If I'm Lucky it will last 10-12 weeks at £90.00 a pop inc delivery, this is to much for me. I make my water starting at around 019 dropping within 2-3 Min's to 002 then after 5 mins 001, So i think in the ionic filters there's just not enough resin. Apart from that very happy with all ionic stuff i have brought.