Hi. I am learning how to open my pool myself for the first time ever. I realized today that since I am no longer going to be using the automatic bromine tablet feeder, I may need to cap these tube openings off. There are 2 ports in 2 separate places that the bromine feeder tubes went into. They both seem to be the same size. Would anyone know what type of cap I would need to put over these to cover them? Or is that the correct thing to do when switching to liquid chlorine instead of the tabs? Thank you so much for your help.