New Owner - Old Pool with Algae

[team5d]

3. Don't backwash too much -- doing so reduces your ability to remove the dead algae. Let the filter pressure increase to 5 psi ABOVE the clean filter pressure, before backwashing.

Can you explain #3? We are new to pool ownership and learning the basics as we go. I've been backwashing based on the advice of a local pool guy I spoke with on the phone who said we should be backwashing once daily until the algae is gone. We have someone else coming out in a couple days to look at our pool and equipment and give us a crash course on owning a pool.

Also, how would I find out what our clean filter pressure should be? It's been running pretty consistently at 17psi both before and after backwashing. I found and downloaded the manual for our pump but it didn't have much info. Can you recommend any good links or sites for learning more pool basics? Thanks!