changed the light bulb last night and after turning on realized how many bubbles are coming out of the return jet in the deep end. I know I have some leaks in the lines. If those are fixed will the bubbles stop or is there something else I can do? Does having the bubbles all the time raise the PH? this is a problem I should have fixed, yes? What is the best way to fix the leaks? Can you just seal w/ sealant or do you have to cut and replace the portion of the pipe? thanks