It appears the filter shell is compromised. You should turn off the pump and not put any pressure on that vessel. It is not repairable. Do you have a MPV? If so, you can set it on Recirculate to keep your water moving and to mix in your chlorine each day.
Pressure vessels can catastrophically fail and harm people and things.
Sorry what is a MPV?
Thanks. Yeah no such thing here.MPV Valves - Further Reading
www.troublefreepool.com
It is a Multi Position Valve that controls the water flow in the sand filter. It would have filter, backwash, rinse, recirculate, and possible winter or closed.
Will do, thanks for the inputNope. Use your brush to mix in liquid chlorine every day until you get the filter replaced.