My advice is very simple. Just keep it simple. What goes in the spa, stays in the spa, so be careful what you put in the spa. Now while it sounds simple, one has to take a look at a lot of different factors from the chemicals one uses to the beauty supplies that are commonly used. The biggest culprits of dirty water when it comes from a human source are lotion and make up. These are items that when placed in water come off very easily and will therefore cause cloudy water and clogged filters.
A common problem is foamy water which can be caused by detergent in bathing suits, soap residue from our body, or cartridge cleaning solutions that aren’t rinsed all the way out of the cartridge element. Still, the problem comes from foreign substances getting in the water that we don’t want. If you are having trouble with your spa water, it might be time to look at the whole picture and reevaluate your approach to your spa maintenance.