We just finished setting up an ultra 18 x 52 pool.. the one that comes with the sand filter.. i put HTH sand #20 in the filter and have it all hooked up.. had the ground leveled beforehand.. though we are off by maybe 1 to 1.5" from one side to the other which i read is probably the max to be ok (its about 1 to 1.5 extra square blocks on the liner on the one side vs the other)... so this i hope is ok (i have paver bricks under each of the legs and i'm going to backfill around the pool slightly, just with sand lightly around the edge at the bottom, then about 2" away ill use round small river rocks in an 18" pathway along the outside of the pool.
My main question is on chlorination.. we have the sand filter, but not the saltwater system. From my understanding, i should buy the 5 lb buckets of 3" chlorination tablets like HTH for around $25 and put one in the filter basket off the pump and let it work from there.. when it disappears add another (maybe once a week)?
Is this what people with the intex ultra pools?
Do i also need to throw a bag of shock into the pool once a week, the shock and swim type (say HTH at about $20 for just 5 bags though?).. or is this maybe more optional and only needed in the spring if its been winterized before opening?
I did order a few of the $8 chlorination flotation devices as well, but i'd rather avoid adding things to the pool if i can avoid it.. I have the intex wall skimmer to attach as well, plus the vacuum / net kit.
Thanks for any advice..