I think 'indefinitely' is the problem word. Nothing last forever. I used to use them on 4x5 tanks and though they worked much better than repeatedly pouring the developer from a bottle to a tank and then back to the bottle (and so forth).
Originally Posted by Mainecoonmaniac
Last edited by Prof_Pixel; 03-11-2013 at 06:50 PM. Click to view previous post history.