Hello! I have had a leaking pool light for two years that my pool company keeps trying to put bandaids on to fix the problem. I want to actually lower the pool water below the lights so a full evaluation and hopefully fix can be done. I have a variable speed pump. I understand I need to shut off the skimmer and pull water from the main drain to waste. Here are my questions. Do I need to cap off the skimmer or is just shutting off the valve enough? Do I need to cap off the jets as well to prevent their lines from filling with air? Note my pool equipment is several feet lower than the level of our pool so we have gravity working against us. Thank you for your help!