So, I've been reading and it seems like the Ozone and UV isn't really worth the money. I'm guessing the consensus is the SWG (twice the size) and constant water checks and sealing rocks? Do I still need to shock the pool with SWG? I am building a pool 32'x15'...3.5' to 6.5' deep...so around 15k gallons. I get some sun, but mostly only morning-midday sun. Sun sets on the other side of my house. I am trying to lower my maintenance and future costs...not sure what set up I should go with and what is worth it. I am going with travertine coping and pavers, possibly wet edge or pebble. I am assuming I will need to seal once a year right?