Recent content by bjohannes

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    DE filter requiring constant backwashing

    I've now been running on the same DE powder (9.5 of my blue scoops) for 4 weeks with no signs of backwashing needed yet. Running a higher FC (no lower than 4.5) made all the difference.
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    Hayward AquaVac 500 stops after a few minutes

    Thanks! Ended up selling it for parts for $100 and picked up a new Pentair Warrior SE (aka. Dolphin S200).
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    Hayward AquaVac 500 stops after a few minutes

    My Hayward AquaVac 500 robotic cleaner (new in August 2017) will only operate for a few minutes before stopping completely. Everything looks normal when I plug it in. I select wall or wall+floor mode, the control panel lights go solid, the impeller spins up, and the robot will drive around for a...
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    Re-plumb to improve flow rate?

    90% was needed before I adjusted the pressure switch. 70% does the trick now, but I had to adjust the switch to its minimum limit.
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    Re-plumb to improve flow rate?

    It's not quite that bad. 2400RPM (40GPM) seems to keep the pressure switch happy. The 25GPM flow switch definitely sounds like the way to go though. Thanks!
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    Re-plumb to improve flow rate?

    I just added a FlowVis flow meter right after the pump, and am currently seeing about 69 GPM at full speed, with a filter pressure of about 9 PSI. Based on the chart above, TDH is about 32. A 24/7 pump speed of 55% gives me 33GPM, which is spot on for 3 turnovers a day. TDH at this speed looks...
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    DE filter requiring constant backwashing

    That'd be great, thanks!
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    DE filter requiring constant backwashing

    Interesting. That orange scoop seems to be 50% more volume than my blue devil scoop. If that's the case, then I should be adding 9 scoops (about 1 scoop per 5 sqft of filter area, just like it says on the bottom).
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    9c7c0414-4ff9-4512-a5d7-34ac54e8cc24.__CR0,0,970,300_PT0_SX970_V1___.jpg

  10. what-in-the-****.jpg

    what-in-the-****.jpg

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    DE filter requiring constant backwashing

    Any idea what the actual volume of this orange scoop is? My "Blue Devil" 1lb scoop holds about 1 liter of water. Interestingly, I just talked to Hayward's support line, and they told me the 6lbs in the manual was actual weight of DE, and not volume. They didn't seem to know anything about DE...
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    DE filter requiring constant backwashing

    I think baseline is about 8psi for me (equipment pad is about 6' above water level). I'll check out the slime bag, thanks! Sounds like the same idea as a skimmer sock.
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    DE filter requiring constant backwashing

    Crud. This would mean I've been adding about 60% more DE than required. Not sure why the scoop says 1 scoop per 5sqft of area. I'll try with 6 scoops and report back!
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    DE filter requiring constant backwashing

    This one holds about 360g, so if Hayward's "recommended amount of D.E." of 6lbs by actual weight, it'd be about 7.5 scoops.