I have had an ionic 1000litre special for five years and the payments are up

.
It is a great system but i have started to set up a static system in my unit.
I have 1 1200ltr ibc and a 1000ltr one already, i am really asking for any advise on the most cost effective way to set up my filtration system.
i plan to have a de ioniser on every van for a final polish... is this practical?
i am looking to produce about 1000 to 2000 litres per night or 12 hourly.
So if any one could recomend a product i would be eternally grateful............promise

or forwrd a link
many thanks kenny.