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  1. L

    Is DE-4820 a drop-in replacement for DE-4800?

    To update the thread on the progress: I found the required measurements in the DE-4820 manual and measured my filter to find that it lines up. The filter should arrive this week and will switch over to the new. I have side question related: could a broken filter result in algae growing? Since I...
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    air release on DE filter

    I am no expert but this happened to me as well. Something clogged the tiny hole on the pressure relief valve and is stuck there. You can try to open the valve with the pump off, and assuming the pressure-relief valve is being the highest point of your plumbing, will suck in air due to gravity...
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    Is DE-4820 a drop-in replacement for DE-4800?

    Hi All, I have been (mostly) a happy owner of an IG 18X40 vinyl pool, and the last two years of my 3 years ownership I have been maintaining it myself, thanks to the detailed and extensive information on this site. The pool and equipment is original to the house, and some parts required...