Before you start shopping for a pool filter, you need to know the three types: Sand, DE (diatomaceous earth) and Cartridge. Each filter has their own pros and cons, which I’ll cover. How to Buy The Best Filter.
Trying to figure out when to change your pool filter sand? This guide will help you change pool filter sand like a pro.
fill a 40' container half way up with sand and gravel then have a long shallow lap pool but have it at an sloping angle so it naturally overflows in to a natural pond where it can be filtered using reeds, charcoal sand and stone before being pumped by solar back to the other end and and keep a full natural cycle instead of chorines and chemicals, hey maybe even make it into a aquaponics system get some fish in there to swim with...
I next filled the planter with pool filter sand. I love using pool filter sand because it is inexpensive, clean, and very white. I use filter sand for filler in vases and displays like you can see here.