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Donldson

TFP Expert Gold Supporter LifeTime Supporter

Well-known member · From NW Ohio

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Today at 9:32 PM

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• • 

    Donldson replied to the thread Green Pool after 3-days of SLAM.

    Filtration removes dead algae. If it's green then the problem isn't filtration. Mustard algae is yellow and clumpy. A green pool is...

    Today at 10:44 AM
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    Donldson replied to the thread 110 or 230v?.

    You'll find conflicting information on this, but that's largely because the answer is different between single/dual speed and VSP pumps...

    Yesterday at 9:34 AM
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    Donldson reacted to Newdude's post in the thread Solar cover only (no heater)? with Like.

    You should remain 5 to 7 degrees above the average of the last 4 to 5 days highs and lows. (What I got fairly near you) Or...

    Sunday at 9:36 AM
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    Donldson reacted to Newdude's post in the thread Solar cover only (no heater)? with Like.

    They *work* great. Nobody ever said they *are* great. We all hate them something fierce but they're a necessary evil for anyone...

    Friday at 4:49 PM
  • 

    Donldson reacted to kul's post in the thread FAS-DPD question with Haha.

    This measurement question reminds me of when I first did this test and I thought to myself that the tiny baby scoop was probably the...

    Friday at 4:28 PM
  • 

    Donldson replied to the thread Solar cover only (no heater)?.

    Of course it makes a difference, but it's not going to let a pool stay at 80 degrees when the air temperature is consistently below...

    Friday at 12:27 PM
  • 

    Donldson replied to the thread 0 CYA and 0 FC. Need advise.

    I speak from experience: those tests aren't perfect and following the TFP method of dosing and testing is much safer. I'm sure I made...

    Friday at 8:59 AM
  • 

    Donldson replied to the thread Is this the wrong filter sand? (Bait and switched!).

    Pure 20 sand is between 0.45 and 0.55mm, 20/40 sand is between 0.45 and 0.85mm. 20/40 should be just fine for any filter listed for 20.

    Thursday at 5:24 PM
  • 

    Donldson reacted to mknauss's post in the thread Testing pool for the first time using legit TFT 100 pro— thoughts on what to do next with Like.

    Do not commiserate over whether the pH is 7.5 or 7.8. Only real concern is if it is 8 or above, so violet/purple tones. Or below 7, or...

    Thursday at 4:32 PM
  • 

    Donldson replied to the thread Featured Raise ph before SLAM?.

    What is your TA level?

    Wednesday at 7:04 PM
  • 

    Donldson reacted to duraleigh's post in the thread FAS-DPD question with Like.

    1. If the sample turns pink, you have added enough R-870 and the test will work 2. If it doesn't turn pink, you likely have no...

    Wednesday at 2:44 PM
  • 

    Donldson replied to the thread FAS-DPD question.

    What discrepancy? The k-2006 instructions are for a 25 ml sample with a precision of 0.2 ppm. The TF-100 instructions are for a 10 ml...

    Wednesday at 8:14 AM
  • 

    Donldson replied to the thread FAS-DPD question.

    These instructions?

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    Wednesday at 6:00 AM
  • 

    Donldson added the media item image000000.jpg(3).jpeg to General Pool Photos.

    

    Wednesday at 6:00 AM
  • 

    Donldson replied to the thread FAS-DPD question.

    One scoop is plenty for the 10ml sample.

    Apr 16, 2024

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