How often should I run my pool filter to ensure optimal water clarity and hygiene? Is there a specific duration that is universally recommended, or does it vary based on several crucial factors? For instance, how do weather conditions, such as temperature and rainfall, influence the necessary filter operation time? Are there considerations regarding the frequency of pool usage, especially during peak seasons, that might necessitate a more rigorous filtration schedule? Additionally, what role do the pool’s size and the type of filter employed play in determining the ideal run time? Should I be concerned about the efficiency of my filtering system, possibly requiring adjustments to my routine based on its performance? Furthermore, how can I ascertain if my filter is functioning adequately and whether it requires maintenance or replacement? In light of these factors, what is the most effective strategy for establishing a dependable filtering regimen that promotes the overall health and cleanliness of the pool?