Upgrade recommendations for replacing 14" Intex sand filter combo?

[PoolDoc]

I'd try them. The worst flex I've seen will probably last 2 years, and you can always fix pin-holes by draining and then putting a PVC coupling where the pinhole is located.

But they seem like they'd be in a position to know the 'good stuff' from the typical stuff.

[Pappy]

I got the ammeter assembled today. My Intex SF70110 pump/filter pulls 4.2 A @117 V. with the filter pressure about "middle ways" between "just backwashed" and "needs backwashed now". The manual and motor tag say 4.8 A. The pump pulls 3.8 A deadheaded.

Just for grins, I checked a cheapo heat gun that's rated at 1500 W 120 V. That converts to 12.5 A. It actually pulled 10.8 A 117 V. or about 1250 W. Heating devices are routinely rated at higher than actual wattage to make them "seem" more powerful. So - - - I feel like the meter is reasonably accurate.

[PoolDoc]

Excellent experimentation. 4.2 x 117 => maybe 400 watts? Does your meter show true power, or just volt-amperes? Does it show power factor?

Anyhow, 0.4kw x 24 x 30 = 288 kwh/month. At $0.14/kwh that's $40/month. I think that's more than most folks realize.

By the way, you may be able to measure the actual flow gpm to within 10% with a 5 gallon bucket, a heavy duty garbage bag, a household scale, and the timer on your phone. It depends on whether you can reliably seal the throat of the bag, so that the pool inflow is capture by the bag. You'd also need a decent twist tie (or a nylon wire strap) to seal the bag . . . and the bucket so you can lift the bag without busting it.

[Pappy]

I have discovered it is less expensive to buy an extension cord of appropriate gauge from Amazon and cut the ends off, than to buy cut-to-lenght wire so, I just have an extra heavy duty extension cord now. And, yes, about the flux.

[PoolDoc]