Does your CA Title 22 controller read a free chlorine residual?

There are some controllers out there stating Title 22 compliant that are either ORP or Calculated PPM based on a conversion from ORP and pH readings. Since there are so many variables effecting ORP, especially in outdoor pools using cyanuric acid, these are nothing more the guestimates. Protect yourself with actual Free Chlorine PPM readings.…

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Understanding ORP & PPM

Here is a recent article from Pool & Spa News about ORP and PPM. This may help people to understand the differences with PPM measurements in regards to chemical automation.    

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BUSTING WATER MAINTENANCE MYTHS

Here is a good article about water testing and water quality for swimming pools and spas. CLICK HERE

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Why Pool Heaters Fail

The question came up as to why pool heaters fail. This is not a simple question to answer as there are several causes for this and it can be just one or a combination of things which will damage a pool heater. Older pool heater were more forgiving but the new low NOX, high efficiency…

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ORP Setpoints

It is not uncommon for users of ORP controllers to be uncertain how to determine ORP set points. Here is a simple way of determining where to start. Check chlorine, pH, alkalinity and cyanuric acid levels and adjust to desired levels. When your water is at the level you want and note the ORP reading…

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Spa Alkalinity Control

Many people experience issues with spa alkalinity going low due to aeration and automated acid feed. Here is how to solve the problem of low total alkalinity. Depending on water volume and acid concentration use the following Set Points and relay on/off times. On If pH>7.6 or 7.7 On Time: 00:00:06 up to 00:00:08 MinTimeOff:00:00:45…

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Exclusive Acid Safe Feed program for PoolWarden & MiniWarden

Being out in the field has its advantages. Here are 2 problems I found that needed solutions. The effect automated acid feed has on total alkalinity and copper plumbing in older pools. I found that some people feed straight acid even though we recommend diluting 1 gallon of acid to 4 gallons water. Even diluted…

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Drill & Tap

To make installation simple, use a drill and tap for your flow cell supply and return fittings. All you need is a 7/16″ drill bit and 1/4 x 18 NPT tap. Lowe’s sells a set for a little over $10. For this to work, you must drill into a fitting where the pipe is glued…

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Do my sensors need to be replaced?

A call came in form a user yesterday asking if he should purchase test buffers, solutions and a signal generator. Personally, I tried these in the mid 1990’s and found it to be a waste of time and money. The MiniWarden and PoolWarden have a built in diagnostic feature for sensor calibration. This will indicate…

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TrueDPD Control

Stefan Nickodem from Commercial Clearwater also asked about True DPD control using PPM instead of ORP which is not clearly stated in the manual. When using the TrueDPD accessory on the MiniWarden or PoolWarden, you can control chlorine feed based on ORP, PPM, ORP w/PPM backup and PPM with ORP backup. Let me explain how.…

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