I dont have any building pictures but these should give you an idea of how it was made
It works by top off water being mixed with kalkwasser as it passes through and kalk mix exits into the tank. What is required to make it-
RO Canister. This is the kind I used
http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA%3AIT&rd=1
2 3/4" To 1/2" Bushings
2 1/2" John Guest Fittings made to hold 1/4" Tubing
1" PVC Pipe