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    What material is this? Grout/mortar

    Opening jobs continue … appreciate some advjce Photo shows coping stone above and fibreglass steps below. The mortar in the middle is falling out and I want to repoint it. What sort of mix should I use? Seems too light for normal sand/cement , and I wonder if something flexible might suit...
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    Automatic cover vs solar cover

    We have an vinyl automatic pool cover that seals over the top of the pool. Not sure on the brand but Hydramatic looks close. Curious to know - do these actually insulate much compared to a solar / bubble cover? Wondering whether I should swap to a solar cover for the summer. It gets cool at...
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    Thread seal - how long to wait?

    Replacing my multiport today and applied liberal amounts of thread seal (rectorseal) to the threaded fittings from pump / outlets etc I did thick coat of seal, turned hand tight and quarter more. That seemed tight enough, any more I’d be worried about cracking it. After six hours switched on...
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    "Magic Box" pool dosing system (UK, 1980s?)

    We had some system installed on our pool in the 80s/early 90s which was supposed to 'automate' dosing of pool chemicals I remember a huge box installed on the wall containing refillable dispensers for various chemicals, and electronic probes which measured the various levels There was even a...
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    Low range CYA test recommendations (U.K.)

    After reading much good advice on here I believe I need to get CYA levels to 20-30, similar to an indoor pool. We’ve got an automatic cover and here in the U.K. more than 8 hours open per week would be an achievement :D This is the first full season so I have no idea on the level. Any advice...
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    Cracked multiport valve

    Anyone seen this before? The return line spigot on our multiport has developed a crack seemingly since last summer. Drips constantly with filter on. Line was drained for winter and the equipment room probably never went below freezing, so absent some mechanical damage I wasn’t aware of, why...
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    Lacronite pump - drain plug won’t tighten

    Last season I diligently drained the pump and left the drain plug out. Gone to recommission and the plug won’t tighten on the thread; just spins round just as it’s almost tight, and I can pull it straight out. Bolt threads look OK so I assume the plastic pump body threads have stripped.. any...
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    Closing up - covered pool, run pump?

    questions on closing.. I have an in-ground pool which has air source heating, the pump and filter in an equipment shed and a hydramatic cover. We are in the U.K. north of London. Winter temperatures are usually 40-50F, overnight drops can consistently go below freezing but significantly below...