To keep the pool sparkling, clean filtration and sanitisation has to be installed and used properly. The heart of the filtration system is the pump.
This pumps water in the pool’s bottom drains, sends the surface water through an automatic skimmer, and then passes everything through a filter before recirculating it to the pool. There are three types of filters commonly used: sand, cartridge and diatomaceous earth.
1. Bigger is not always better when it comes to pool pumps. A pool pump that is too large can hinder filtration and caneven damage the filter and/or heater. It is therefore very important to know the size of a pool before purchasing a pool pump.
If there is additional equipment (such as water features) installed into the pool, it will have to be taken it into account when deciding what size pump is going to be purchased. The more equipment is installed into a pool, the more powerful the pump needs to be.
2. Sand filters are the oldest and most common method of pool-water filtration. They use special filter sand to trap dirt and debris. As the sand particles “load up” or become clogged, they trap smaller and smaller particles. Sand filters are cleaned by backwashing, which involves reversing the water flow through the filter and flushing the dirty water into a waste line.
3. Cartridge filters use large cylindrical cartridges to screen out dirt. Unlike sand filters, cartridges don’t require backwashing. Instead, you simply remove them and rinse off the dirt with a garden hose, a process that uses much less water than backwashing.
4. Diatomaceous earth (DE) is a porous powder that has microscopic openings. As water passes through
the openings, particles are trapped. DE filters can strain out dirt, dust, algae and some forms of bacteria.
5. Chlorine is by far the most commonly used pool sanitiser; it’s also an effective oxidiser. When dissolved in water, chlorine releases free-available chlorine, also known as hypochlorous acid. There are different kinds of chlorine sanitisers available.
6. Salt chlorine generators represent the very latest advancement in pool sanitisation. Instead of using standard pool chlorine, this system transforms common table
salt into chlorine. Contrary to what you may have heard, salt chlorine generators don’t create saltwater swimming pools. They are gentler on the eyes and skin but the initial outlay can be more.