Hi, how long do you leave your resin (in my case standard-resin) in the tank/ tray? I am only printing small parts, every week or so. Therefore, I do not use a lot resin. Now, my tank is filled and in use with standard resin since 6 weeks. If not used for printing, I am storing the tank in a dark and cold place.
Edit: I have read a lot of horror-stories of leaking tanks, which results in a horrible situation if this happens while printing. But following the official instructions of leaving resin in a tank for only less than 4 weeks is not that easy if you are not printing a lot volume per part.