Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
I'd do the same. I test my alkalinity at least every other day with 2 different tests.If I send you $500 can I be a beta tester?
Great work and great potential product. If it was me, I'd design and sell it off to a large manufacturer. Some people that are in the business of design have no business in manufacturing/distribution. I'm not saying you aren't but it's a rare quality in my mind to be great at both.
Either case, amazing work!
I would appreciate very much if you will answer me and make a comment on my question: First, thanks for your work, very interesting and impressive. Now my considerings: KH/Alk is not varying with CO2(aq) thus not varying with Photoperiod (as pH does). The law of the conservation of alkalinity. If you measure pH after a fix titrating amount and indirect calculate that pH to KH(as i suspect you do), you must also know CO2(aq) as you always need both pH and CO2(aq) to correct calculate dKH. The other method is to only measure CO2(aq) after titrate the sample to a pH of 2.3 and measure the difference in CO2(aq) after titration, and that rise in CO2(aq) is with some calculations an exact measure of true HCO3+CO3. In both cases you must at least measure CO2(aq) with infrared sensor. As you demonstrate that you measurement varies with light (=CO2(aq)), i am very curious how you calculate and measure dKH. Of course i understand and respect that you will not tell details, but maybe you can answer in big lines so i/we can evaluate your method.For those of you attending MACNA this coming weekend, keep an eye out for me demonstrating a prototype of my Alkalinity Monitor device. It is capable of interfacing with any controller that can accept a pH probe's input. It has both an accuracy and also a precision of +/- 0.05 dKH. I'm thinking this could be a game changer.
Here is an Apex graph of two day's worth of monitoring of my tank, showing a small daily alk swing in response to the photoperiod:
Great for monitoring alk daily but no so much for using it to add alk on its own. So what happens if the regent is defective like we have seen in previous situation with Hana?There is an occasional outlier, as can be seen in the diurnal swing graph. It uses a reagent, and if the reagent runs out, then that currently causes the output to show a false large sudden alk spike, but these issues can be handled with better anomaly detection algorithms in the software. Once broken in, which takes just a day or two, there is virtually no drift. Reagent aging might cause some drift, but I actually have a solution to greatly minimize that issue that I just haven't implemented yet. There is a calibration procedure that can be run any time. With calibration, the unit is basically as accurate as the calibration standards are.