You can buy ionics filters from "windowcleaningsupplies.net, 111 George Street, Edinburgh, EH2 4JN" or make your own with the old tube and a bit brain power, No my name is Anthony & not Reuben, I can only comment on Ionics as i have two off ther systems, you will notice i do not slag any other system off as i have not used any other, so i think it best if only people who have used or own an ionics system answer questions about them and those who wish they had one but spend there money on beer instead just read the thread.
P.s as for Reuben i would never deal the man again.
p.p.s alanwilson your reply was posted after mine so i was not questioning if you knew what you were talking about.