Your pool inspector is full of it; you aren't going to save chlorine by adding a little MORE of what the sun already does a lot!

UV system *never* reduce chlorine use on properly managed pools; they always increase it, due to increased photolysis of the chlorine. This can be a good thing on INDOOR pools, since chlorine photolysis releases some high energy oxidants that help oxidize complex combined chlorines on outdoor pools; but on outdoor pools, a UV system is sort of like putting a trolling motor on a ski boat that already has 150hp outboard Honda!

1. Get a cheap OTO/phenol red drops kit and 12 gallons of plain 8% bleach at Walmart. Test your pool, post the results AND start dumping 2 gallons of bleach in the pool every evening -- till you have a better plan. It is much, much easier to avoid algae, than to clean it up!

2. Order a K2006 testkit, so you can manage pool instead of being 'pool-stored'. You have to understand that inaccurate water testing BENEFITS pool stores by increasing chemical sales! http://pool9.net/tk/

3. ID your pump & filter AND any other equipment. Get make and model numbers. I'll help you find the manuals online. Once you have the info, post it => http://pool9.net/pf-equip-form

. . . that's a start.