I use mine with an extra tank so I can load the reel, stash it in the extra tank, fill the 4x5 tank with developer then plop in the reel in the dark. Cap it and do the developing routines while I put the fix into the extra tank. After a quick rinse in the dark the reel goes into the fix tank and cap it till the fix is good. This avoids the pour time problems. The extra tank is from a large diameter 220 setup.