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  1. foobert

    DIY automation build

    And, so begins the build of my automation system. Intended features: Valve control for intake, returns, sweep, and solar. Pump control of the 4 programmable speed presets. Solar temperature controller Heater control and temperature modulation. Mobile friendly web-enabled control...
  2. foobert

    Check my assumptions on SWG understanding

    Do I understand correctly that the output percent adjustment changes the amount of time that the cell is actually powered, ala, pulse-width modulation at the respective percentage of on-time? Thus, if electric costs are ignored, would there be any difference to cell life between running for...
  3. foobert

    Variable speed pump w/ easy external control

    Finally remodeling my 30+ year old pool. I'm drawn to the Pentair Superflo VS (1.5 FRHP -- 342001) because of the relatively low-cost (for a VS), and the trivially easy to use external control inputs built into it, which make my home-grown automation system very simple to connect to it. Some...
  4. foobert

    Lucky underground leak detection.

    Every since I bought this house 1.5 years ago, I've had a persistent problem with a suction side air leak that's been getting progressively worse. I went through all the usual suspects around the pumping pad: pump drain plug, o-rings, valves, fittings, etc and never had any luck. Finally, I...
  5. foobert

    Bleach concentration per unit volume and other calculations

    In the process of validating the math for my bleach automation system, and I ended up down a rabbit hole learning about various methods of how bleach concentrations are characterized. Correct me if I'm wrong here, but, I think it's most common for US companies to specify the concentration as...
  6. foobert

    Sprouting Seeds

    The last few weeks, I've noticed that wind-blown seeds that have settled in the pool are sprouting and getting picked up by the sweeper. I haven't had any lapses in chlorine (full chemistry linked in my sig). I find it odd that plants can grow in properly chlorinated water. Thoughts?
  7. foobert

    The uber geek way of measuring your free-form pool volume

    I have a crazy pool designed in the mid seventies by someone that must have been under the influence of some of the finer methods of chemical enhancement. I was tired of not really knowing how many gallons it is. Google Sketch-up is an excellent 3D drawing application that is fairly simple to...
  8. foobert

    Foobert's bleach pump automation

    After a year of dumping various sorts of chlorine into the pool, I finally got all the bits and pieces together to automate the chlorine addition process. The key element that pushed me over the hump was learning I could open a COD account at Hill Brothers Chemical to buy commercial sized...
  9. foobert

    How aggressive is mustard algae + the black algae woes

    Hello from a long timer lurker here at TFP. :wave: In Jan 2012, I bought a pool that happened to come with a house and a small slice of property. Dispite my utter neglect those first 6 months, I'm happy to say that I never let it turn green and we've become pretty good pals since then...