Recent content by Tfastle

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    Do I need a check valve added so my spa doesn't drain?

    I understand that a common practice would be to have a portion of the water diverted to the spa and overflow into the pool to keep the water clean and sanitized (our last pool was like that). Because we have a cover on the pool and automation that's not realistic unless the cover is opened...
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    Do I need a check valve added so my spa doesn't drain?

    The spa does not act as a water feature. While there is a "spillway" it's only for filling or topping off the spa. If I want to use it as a spill way it would basically just be having the spa in "fill' mode (both 3way valves fully open to the spa side). When the valves are in "pool mode" no...
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    Do I need a check valve added so my spa doesn't drain?

    Thanks for the reply Jimrahbe. When in pool mode the return valve is set to fully close. When in Spa Mode the pump is fully diverted (3 ways are closed to the pool) to the spa - sucks from the spa drains, returns via the spa return lines. My thinking was that, with the pump off, the water in...
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    Do I need a check valve added so my spa doesn't drain?

    Thanks for the reply. When the hot tub is heated or the system is in "spa mode" no water goes over the spillway. In service mode I can set the valves to "fill" which pulls water from the pool (skimmer and drains) and returns it to the hot tub but only really do that to fill the hot tub and...
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    Do I need a check valve added so my spa doesn't drain?

    Our 9 year old pool has a hot tub connected to it that's water surface is about 18" higher than the pool's. They share a pump. When not used the water in the hot tub has always slowly gone down. Each year it got progressively worse. About 4 years ago I replaced the diverter inside the Jandy...
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    CkValveDrawingArsz.jpg

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    Sand filter let's silt through? Alternative media?

    Clean pressure is around 14psi, I generally backwash around 28-30psi which is what I was told when the pool was new, to backwash when it goes up 15psi. I'm not fully convinced it is a filter issue but common sense sort of dictates that as far as I can tell. I could be wrong but have not heard...
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    Sand filter let's silt through? Alternative media?

    It's too fine to rub between your fingers, or to catch to rub between your fingers. If you rub a puddle or collected spot of it with finger against the bottom it is like a very very very fine grit. It basically dissipates when you brush it, into a light cloud that, as it spreads it almost...
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    Sand filter let's silt through? Alternative media?

    I am not sure what you mean by "flushed out". You mean when I backwash the filter or flushed out of the filter into the pool? I assume you mean when backwashed. After I have backwashed I still have the same issue. I believe the silt is going through the filter and thus, not collected and not...
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    Sand filter let's silt through? Alternative media?

    Yes, from what I learned here I actively monitor and manage my chems using the test kit recommended here. Use liquid chlorine and supplement with tablets when out of town. The pool has a cover and is covered nights and during the day when not in use. Get very little debris in the pool. I put...
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    Sand filter let's silt through? Alternative media?

    My pool is about 5 years old and has a cover over it most of the time. Since it was new I have had an issue with silt collecting in areas of the pool. The longer the pump runs the more silt. It's a very fine silt and dissipates with water movement but, of course, settles out again over time...
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    FC, CC, CYA and shock question

    That would make a lot more sense. I was pretty sure it wouldn't take quite 5000 years but I am surprised the CYA would add up that quickly ... thanks WJR. I will stick with my original plan and let the tabs bring it up and then switch to bleach. All very helpful information and appreciated...
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    FC, CC, CYA and shock question

    That's very helpful, thanks! If that's 6-9 ppm of the volume of the tablet then, if my math is correct (approx 4,5 cubic inches per tablet, 51 tabs/gallon, 18000 gallon pool), it's going to take me 924000 tablets to raise my CYA 9ppm. At 3 tabs a week that's around only 5000 years. I better...
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    FC, CC, CYA and shock question

    Thanks for the information TS! I have tried to use the pool calculator but I'm not 100% clear what I am doing but will play with it. I will up my FC tomorrow and let the sun do some work. By "FC 24 hour usage", do you mean see what the FC is one day and then the next (24 hours) check and the...
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    FC, CC, CYA and shock question

    Until I came to this forum shocking had been presented to me as a "do it every couple of weeks" thing. Clearly that's not accurate but that's pool builders and suppliers for you. I've read quite a bit here and in pool school and get bits but haven't yet seen it stated specifically (I'm sure...