One of the essential tools that will assist you with keeping your swimming pool clean is the filter. It is worth it to invest in a very good one to help you keep things as clean as possible. If the filtering system isn�t up to par you will find it very difficult to enjoy your swimming pool. You may find you are spending more time cleaning it than enjoying being in it. That isn�t what any homeowner had envisioned when they decided to buy a swimming pool.Hopefully you got a great swimming pool filter when you purchased the set up. If not, you aren�t destined to suffering for it though. These filters come in all sizes so you will need to find out which size you need for your swimming pool. You will also need to know the basics of the three types of filters offered. That way you can make a well informed decision about which one is going to serve your needs the most.While you can consult with the dealer for the swimming pool supplies, keep in mind that they are going to try to sell you what they want to promote. So having some basic facts about the types of filters is going to be in your favor. That way you can tell them what you are looking for instead of asking them what they recommend. Pool selber bauen All swimming pool filters belong to one of three categories � sand, cartridge, and Diatomaceous Earth commonly referred to as DE. With a sand swimming pool filter the water gets pushed through sand to remove debris from it. There are tubes at the bottom of the filter that bring the water in and out.This process will result in the water that is dirty being pushed down while clean water is pushed upwards. You do need to check a sand filter often though to make sure there isn�t a build up of debris. When that occurs the water won�t be pushed in at the same rate as it should. Therefore you will find that there is dirty water all over instead of just at the bottom of the swimming pool.While this type of filtering system is inexpensive, it isn�t always the best method. This is because the filter doesn�t always get all the debris out of the water. Some decent sized pieces can find their way back into the pool. A better alternative for you may be the cartridge pool filter. This works with a type of cartridge encased in a cylinder. This cartridge is what grabs and holds onto the debris that is collected.They are able to filter large amounts of water in less time than with a sand filter. They also don�t have to be cleaned as often because they can hold more debris. So if you are looking for a way to clean your pool and cut down on the time you spend on such tasks this could work well for you.You should clean them out once a month when you are using your swimming pool on a regular basis. You can take out the cartridge and gently wash it with water. Don�t use high pressure on it though as that can result in it being torn and damaged. You should inspect the cartridge each time you clean it out. Replace it when it starts to show signs of wear. Many swimming pool owners are able to use the same one for six months to a year before replacing it.The DE swimming pool filter is more complex but it also works the best. It involves tiny diatoms being active inside of the filter to collect dirt and debris. This process is able to get rid of even the finest grains of dirt which means your pool will be the cleanest it possibly can.You will have to watch the pressure gauge so that you can complete the backwash process for this type of pool filter as well. While these types of filters are the most expensive those consumers with them don�t seem to have any complaints about how well they work.