The JOBO 1510 daylight developing tank holds one 1501 multi-format reel for 35mm film. The 1501 reel is the easiest reel to load available and when used in the 1510 tank, uses less chemistry volume than any tank available, requiring only 4 oz. of chemistry when using constant agitation rotation method by laying the tank on its side and rolling it back and forth or 8 oz. of chemistry for intermittent agitation via full inversions.