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Leakage using AGO Film Processor

If You Had a Leakage Using Your AGO Film Processor

Experienced a leak during development? There are two common causes: an incorrect attachment of the AGO to the tank, or a crack in the Paterson tank itself. Here is how to identify and fix both.


Proper Attachment of AGO to the Paterson Tank

Follow these steps to make sure the AGO is correctly seated and sealed before developing:

Step 1 Attach the rear stand to the tank

Fit the rear stand onto the Paterson tank before attaching the AGO.

Step 2 Attach AGO firmly to the tank

Attach the AGO to the tank with the funnel holes facing down. Press the AGO firmly onto the tank using your upper body weight to ensure the rubber seal seats properly.

Alternatively, place the tank on the ground in a vertical position and attach the AGO from above, pressing down moderately with your bodyweight. Make sure the funnel holes are facing down towards the bottom of the AGO.

Step 3 Place on a flat surface and start developing

Once attached, place the AGO on a flat surface. You are ready to start developing.

AGO assembly guidance

Make Sure Your Paterson Tank Is Not Cracked

Check that the red edge of your Paterson tank is not leaking between the black tank body and the red plastic ring. This joint can crack over time and cause leaks that have nothing to do with the AGO attachment.

Leaking Paterson tank red edge

If this is the problem, you can fix your tank with a small amount of superglue or silicone-based glue applied to the joint.

Gluing a leaking Paterson tank

If you have a different kind of leakage that does not match either of the above, contact support@vintagevisual.eu and describe the problem. We are happy to help.

Updated on 13 Feb 2026