Greeetings, I note your recommendation to backwash when pressure increases to 25% of the clean filter pressure. Is that advice valid for older pools (1980) with smaller plumbing? I have 2 return lines from the pool - main drain and skimmers, and both are 1.5" PVC. The return to pool line is a single 1.5" PVC. My furthest skimmer and main drain are about 60ft from the return manifold.
Is it simply energy efficiency driving the recommendation for newer pools, or is also a consideration of potential tears for DE filter grids. My filter manufacturer recommends a 10psi increase prior to backwashing.
Thanks,
Is it simply energy efficiency driving the recommendation for newer pools, or is also a consideration of potential tears for DE filter grids. My filter manufacturer recommends a 10psi increase prior to backwashing.
Thanks,