Kalk Reactor $40 - tentatively sold 2 buyers in line
 

Kalk reactor that I don't use anymore because I've switched over to two part dosing. still works very well. It has 1/4" line for freshwater input and 1/4" line for kalk water output.
Top part has 1.5" union to fill container with kalk.
Side has a maxijet for mixing (put on a timer for easy mixing)
The main body is made of 1/4" cast acrylic and so are the flanges and lids. The acrylic tubing itself is worth a lot more $$$.

http://i123.photobucket.com/albums/o...00925-2247.jpg

http://i123.photobucket.com/albums/o...00925-2246.jpg