Im having some issues with i believe low pressure on my intex sand filter 3000gph 16 inch pump i believe the pressure is not putting out the correct psi. I have some pictures below that show pressure before and after backwash. Wanting to no if this is being caused by an alge bloom or start of one. Also wanted to no if this could be the impeller as im thinking it could be from this but not sure. My levels are for my latest pool test this is after i have vacuumed and brushed the pool thoroughly for and hour or so tested on 7/13/2020 at about 6:30pm. Pool is completely clean no sign of alge or slimy film in pool is crystal clear.
TH 100
TC 1
FC 1
PH 7.6
TA 120
CA 30
First Picture shows before backwash second picture shows after pool is cleaned and backwash has completed on normal filtration. Also showed some more image of my pool inlet jet showing it is slightly out of water wanting to no if this could cause psi drop. Also pics shown of pressure in skimmer basket.




TH 100
TC 1
FC 1
PH 7.6
TA 120
CA 30
First Picture shows before backwash second picture shows after pool is cleaned and backwash has completed on normal filtration. Also showed some more image of my pool inlet jet showing it is slightly out of water wanting to no if this could cause psi drop. Also pics shown of pressure in skimmer basket.



