What can cause an increase in filter back pressure in a pool system?

An increase in filter back pressure in a pool system can occur for several reasons, all of which contribute to the overall resistance to water flow. Clogging of the skimmer leads to a buildup of debris that restricts the flow of water into the filtration system. When the skimmer is clogged, the pump has to work harder to maintain the proper water circulation, resulting in increased back pressure.

Improper water level can also be a factor, as a low water level may lead to the pump drawing air alongside water, which can create additional strain on the filter system and push back pressure higher than normal. Similarly, excessive debris in the pool can accumulate in the skimmer, pump basket, and filter, leading to blocked pathways for water flow. As the filter collects debris, its ability to effectively process water diminishes, resulting in increased pressure readings.

Considering all these factors, it is clear that each of the listed scenarios can individually or collectively contribute to an increase in back pressure. Thus, the most comprehensive answer is that all of these conditions can lead to an increase in filter back pressure.