Recent content by cj133

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    Baker II HR-30 question

    My friend ended up with a Baker II HR-30 500lb sand filter. It's all new but I'm told sat around for a while unused and empty. He loaded it with 500 pounds of filter sand. I think HTH brand. He's having a strange issue where the system works fine but the pressure shoots way up after 15 minutes...
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    How do they empty large sand filters?

    I'm more upset I have to tell him he was right. @TinFoilHat I spend most of my week dealing with things that aren't easy.
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    How do they empty large sand filters?

    I really hope that's not the answer. That's what my friend guessed. ;)
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    How do they empty large sand filters?

    I was talking with a friend today and the question was brought up, how do the remove the sand from larger filters? The 500,600 even 900 pound sand filters often used at hotels etc, how do they dump the sand out if they need to change it or fix a lateral, or even replace the filter? My 250 I...
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    Turning green with cold water

    I maintained my fc until I closed, and literally the day I shut the pump down the top of the pool froze, which is typical for me. I try to hold out as long as I can. But, I'm fairly certain my level was fairly low, like 4-5ppm. That was my first mistake. What I haven't figured out is how I'm...
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    Turning green with cold water

    As some may recall I stopped covering my pool in the winter. I let the pump run in low speed 24/7 until the water gets into the low to mid 30s, and then shut it down and drain the filter etc. This usually takes place around Thanksgiving / early December. Then, I open as soon as I can which is...
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    commercial / public pool question

    Ok stupid question. And this is kind of off track, but I've been curious for a while and my boss literally just asked me because his CYA ended up too high due to using pucks.. What's the difference between a CYA of 30, 60, 80, 100 etc? What happens as you raise that level, as long as you...
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    commercial / public pool question

    What is the reason for banning CYA in some areas? Also, is CYA necessary for an indoor pool? That had occurred to me as well, but the way you wrote your response leads me to believe chlorine stabilization isn't the only purpose? Or is the indoor situation part of the problem CYA aside, because...
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    commercial / public pool question

    I chose this section because, I think this kind of is off the deep end. Looking at a drawing and requirements for a small public pool I'm amazed at what it calls for as far as filtering etc. Off the top of my head, it's something like 10' wide by 30' long, fairly shallow, like 4 feet deep and...
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    Types of chlorine. Why trichlor and dichlor?

    I need to update this. The information I posted, I thought was correct but I feel it's skewed and may be misleading. 1 gallon a week has been normal for me for a long time during the summer, but things are changing I guess. We've had a pretty bad heatwave which has my pool above normal which is...
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    Types of chlorine. Why trichlor and dichlor?

    I should put a foot note. That does depend on who swims in it and how often. I can kill a gallon in 1 weekend under the right conditions.
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    Types of chlorine. Why trichlor and dichlor?

    I think I've got 8500 gallons. It's only a 15x24 oval. Right now during a heat wave I'm still only using about a gallon a week of 10%.
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    Types of chlorine. Why trichlor and dichlor?

    Every time I look into a salt water generator I can't justify the cost. Currently I spend around $20 a month for liquid chlorine / bleach. A salt water generator goes for about $1500, I believe. So it would take 15 years just to break even and I'm sure that generator isn't going to last that...
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    Types of chlorine. Why trichlor and dichlor?

    Are there any compressed gas options and if so are they even remotely practical for home use?
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    Types of chlorine. Why trichlor and dichlor?

    Interesting. I see what you mean about cost, those tablets are a small fortune. I would really like to know how much calcium ends up in the pool the way my dad always used cal-hypo which, is probably frowned upon but it worked. He sprinkled it into the skimmer slowly and then when he'd...