I was told by developing purists that I didn't need this but honestly I found developing so stressful before I bought the AGO Film Processor... now developing sessions are much more zen because I can focus on what's next instead of timing and agitating and trying to get chemicals ready all at the same time. I've used this with the universal tank, the multi reel 3 and multi reel 8 tanks and it works really well with them all. I'm so glad I bought this! Sample shots on Kodak Gold 200 processed with the AGO!