replace your filter media entirely.
q. how do i change the light bulb in my pool?
a. most, if not all, swimming pool lights have a single screw at the top of the light ring under water. remove this screw, pulling the light away from the pool wall, which should result in the entire pool light canister floating to the surface.
the light canister will be connected to a permanent cord that is left long enough to allow the light canister to be placed on the pool deck. once on the deck, flip the canister light lens face down and you will see either a series of screws around the back of the 