HDX test kit in Canada

Welcome to TFP! :wave: Problem with that kit is the limited capabilities. You won't have the FAS-DPD portion to test FC at various "accurate" levels which is really the cornerstone of home testing. If you don't have the ability to have the TF-100 shipped close to you or to a location south of the border, you should look into the Taylor K-2006C.


 
Yeah I would love to get a K-2006C but all the ones I find here in Canada are $250 and over plus shipping and customs. Do you know of any good alternatives to the Taylor Regents.
I do not. Perhaps some fellow members from your area may know of another source.
 
As Pat said above, if you are anywhere close to the US border, it is typically better to have a test kit sent to a mail drop in a US border town and drive over to pick it up.
 

 
What size pool do you have? Is this a new fill, or do you have water chemistry issues?

The HDX will tell you TC of 3 ppm or lower, and pH if TC is 5 ppm or lower.
 

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The critical variable missing from the HDX kit is CYA concentration. In a northern short seasonal pool, CYA is essentially ‘set and forget’. If you know your pool volume, you can use a ‘dead-reckoning approach’ (Ben Powell coined this term) to test the accuracy of pool store determined CYA, assuming they are using the LaMotte Spinrite Waterlink device. You weigh out a specific weight of powder stabilizer using a kitchen balance with 1 gram resolution, and dissolve it in the pool using the suspended sock method and calculate the theoretical concentration in Poolmath. Wait three days and sample the water, and take to pool store. Repeat the exact procedure a second time and revisit pool store. The second measurement should be twice the first, and extrapolation to ‘zero addition’ gives you the initial concentration. This procedure is useful in the Spring to determine CYA at opening, and then just keep track of what you are adding. If you stay at the low CYA (20-30) end of the FC/CYA chart, you should be ok.
There are alternative chemistries that don’t depend on Taylor products, but they are very pool specific, and don’t have anywhere near the universal value that the TFP methodology has.
 
No need to bother will pool stores using the linked Seasonal method. With a small water volume, it is just not worth fussing over. Run it as per the linked article, if water goes cloudy, drain and start over.
 
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