What I have been doing a little at a time is getting older pump & filter units from people who upgrade to better Intex filters, and broken units. I take the filter canisters from these units, and I've been making a hard plumbed triple filter set. Each filter canister is being modified to hold 2 filter elements, joined with a short piece of PVC pipe. So far I have one double filter set, and am almost done with a second set. As I get them done, I've been hard plumbing them into my pool circulation system.
It makes a world of difference, believe me!
By adding more filter area, the flow rate per sq ft of media drops, so I get less "blow through" of the finer particles.
The 2500 gph pump delivers just over 40 gpm in ideal conditions. Putting that rate through a 15 sq ft filter means that I'm pushing almost 3 gpm through each sq ft of filter. By doubling the area, I've dropped the rate to 1.4 gpm. When I get the second unit plumbed in parallel to this one, I'll have dropped that to 0.7 gpm/sq ft.
Added benefit to this is better circulation through the pool.
It makes a world of difference, believe me!
By adding more filter area, the flow rate per sq ft of media drops, so I get less "blow through" of the finer particles.
The 2500 gph pump delivers just over 40 gpm in ideal conditions. Putting that rate through a 15 sq ft filter means that I'm pushing almost 3 gpm through each sq ft of filter. By doubling the area, I've dropped the rate to 1.4 gpm. When I get the second unit plumbed in parallel to this one, I'll have dropped that to 0.7 gpm/sq ft.
Added benefit to this is better circulation through the pool.