I backwashed on 6/4/2020 and today 6/8/2020 my PSI has increased from 8 to 11, run my pump at 2100RPM. Normally, it does not happen that quickly so I am a little concerned. We did have a busy weekend in the pool this past weekend but I would not think that would cause such a quick increase.
I have a 48sft Pentair FNS DE filter and I normally put 10 scoops (Aladdin cup) when backwashing. Could the cause of the increase be due adding too much DE when recharging? I have always added 10 scoops after backwashing and never had this issue. Pool company told me to always add 10 scoops but after researching I think I should be adding around 8 (80%) scoops after backwashing. They literally said, "Always add 10 scoops after backwashing" when I told them I read to add 80% of what you normally start with which would be 10 scoops.
I noticed a change in water flow to both of my skimmers, mainly the shallow end skimmer, perhaps due to it be furthest from my pool pump. Normally, there is a good current flowing in both of them but now there is little coming into the shallow skimmer and a weak one in the deep end skimmer. When I notice this along with my pressure gauge getting high, I backwash which fixes the issue and my water flow is normal again.
Should I backwash again and only add 8 scoops to see if that fixes the issue?
Below are my test results, just in case it could be a water chemistry issue:
FC = 4
CC = 0
PH = 7.8
ALK = 80
CH = 325
CYA = 60
SALT = 3400
WATER TEMP = 80 degree
I have a 48sft Pentair FNS DE filter and I normally put 10 scoops (Aladdin cup) when backwashing. Could the cause of the increase be due adding too much DE when recharging? I have always added 10 scoops after backwashing and never had this issue. Pool company told me to always add 10 scoops but after researching I think I should be adding around 8 (80%) scoops after backwashing. They literally said, "Always add 10 scoops after backwashing" when I told them I read to add 80% of what you normally start with which would be 10 scoops.
I noticed a change in water flow to both of my skimmers, mainly the shallow end skimmer, perhaps due to it be furthest from my pool pump. Normally, there is a good current flowing in both of them but now there is little coming into the shallow skimmer and a weak one in the deep end skimmer. When I notice this along with my pressure gauge getting high, I backwash which fixes the issue and my water flow is normal again.
Should I backwash again and only add 8 scoops to see if that fixes the issue?
Below are my test results, just in case it could be a water chemistry issue:
FC = 4
CC = 0
PH = 7.8
ALK = 80
CH = 325
CYA = 60
SALT = 3400
WATER TEMP = 80 degree
