Should I backwash filter?

[azanclay]

The last time I backwashed my filter (sand filter) was mid-May. The current pressure is 25 psi and it took a loooooong time for the pressure to even get to 25 psi and it has been at 25 psi for maybe a month now. Baseline pressure is 20 psi. Previous owner said to backwash when pressure is at 30 psi.
Should i wait until the pressure gets to 30 psi? Or should it be done every month? Every other month?

 

[azanclay]

By the way I have a robotic cleaner that does an awesome job cleaning the pool and it could be why mu pressure stays at same pressure for a long time

 

[mknauss]

You should clean/backwash your filter when the pressure rises by 25% over clean pressure.

If your clean pressure is 20 psi, you should backwash at 25 psi.

 

[woodyp]

Do it whenever you get a 20 or 25% rise over your normal clean pressure.

 

[JimMarshall]

Assuming that your pool is clean and the filtration is to your liking, it should be no concern that your filter is taking a long time to raise PSI. If your filter is doing a good job and it takes an entire season to gum it up to need a backwash, that’s less water loss and work for you!

Although like the others said 30 PSI is too much. Backwash at a 25% increase, which would be now at 25 psi.

 

[azanclay]

Ok thank you so much for all the quick responses

 

[sktn77a]

My pump hardly produces any flow when the pressure gets close to 30 so I'd backwash it at no higher than 25psi.