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Thread: Questions about algae. Question about chlorine consumption.

  1. Back To Top    #1

    Join Date
    Aug 2009
    Bloomington, IL

    Questions about algae. Question about chlorine consumption.

    Algae Questions
    1. Where does algae come from in a pool?
    a. Does it have to be carried in on something?
    b. Or does it develop in the pool on its own?
    2. Are the ingredients for algae always present? In other words, if the free chlorine falls below the minimum necessary level will algae always develop?

    Chlorine Consumption Question If we could develop an experiment where two pools are absolutely identical in all respects except free chlorine level, would the consumption be identical? Assume one pool has a FC level of 10 and the other has a FC level of 5. Everything else is identical same location (side-by-side), same amount of sunlight, same measurements for CC, pH, TA, CA, CYA.

    If the pool with FC = 10 loses 2.5 ppm in a given period of time, would the pool with FC = 5 lose 2.5 ppm, likewise? Or would both pools lose the same percentage of FC (25%)? In other words, 2.5 ppm for the pool starting with 10 ppm and 1.25 ppm for the pool starting with 5 ppm.

    Answers to these questions will help me better understand my pool.

    27,000 gallons
    DE filter
    BBB Method
    Taylor K-2006C Test Kit
    Opaque automatic cover.
    Pool usually covered unless there are swimmers.

  2. Back To Top    #2
    Mod Squad woodyp's Avatar
    Join Date
    Apr 2010
    East Texas

    Re: Questions about algae. Question about chlorine consumpt

    Algae "spores" are airborn and can turn into an algae "bloom" in any untreated water. Any excess FC above your target level for your CYA level will burn off at a faster rate in heat and daylight is the short answer.
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