Not sure why, but over the last few weeks, I am seeing an increase in my pool pump pressure over a matter of days instead of the normal weeks. When clean (or after a backwash) I run at about 13-14. And I can usually go 3-6 months without a backwash triggered by rising pressure to about 20. Now, I go from 13-14 to 18-20 in 2-4 days. I have recently switched to Bioguard Maintain Ecoclean DE and with a 36 filter typically use 2 scoops after a backwash to replenish. I also recently used a stronger detergent (purchased at the pool store) straight into the pump basket to loosen and breakdown any tough debris on the filter. But I am still needing to lower the pressure by backwashing atleast once a week if not more often. Any ideas on what might be going on?
Thanks for the help.