Originally Posted by
LabRat
Another tip for the hard rubber tanks is to not leave developer and other chems in them for prolonged periods as the solutions dry slightly and leave a ring/stain with crust that solids can get into solutions leaving debris that can attach to film... The tanks can permanently stain, and a photographer I know had to throw out tanks that the walls seriously distorted... And they were disgustingly crusty...
For 3 1/2 gallon tanks, they are hard to drain, but for tanks under a gallon, not hard to empty into a large graduate or pail and then funnel into a sealed bottle... And it gives you a chance to filter the solution to remove submerged dust/debris that's there...
Even stainless tanks can rust over long intervals from prolonged chem exposure...
I use a dilute version of DK-50 as a one-shot in my tanks and fresh/consistent in use, and as dilute, economical to use...
Steve K
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