I currently have an above ground pool 15' wide 4' deep and i use a chlorine bouy which i take out when not in use.
no all you have to do is use a pump or the drain if the pool has one
it is because there are not many people who actually use above ground pools I recommend getting a underground pool so then it wont leak
PVC pipe is fine
If you like suds.
No. You can raise the PH level in your pool with Borax. I use it.
Masonry Sand is used to level the bottom of a pool
If the pump is big enough and the pipe work is done corectly there should not be any problem with it.