Hi All, My toilet tank is leaking into the bowl, causing the fill valve to run every 5-10 minutes to refill the tank. I have identified the problem as being with the flapper. Tiny air bubbles are forming around the seal preventing the flapper from making a good seal and keeping the water in the tank.

Any ideas on how to resolve this air bubble problem in the toilet tank? Tiny air bubbles are also forming on the styrofoam float that is attached to the chain which is attached to the flapper. What might be causing the air bubbles to form and how might I resolve the problem?

Thanks in advance.