All tests performed using Hanna checker, same time of day and with a new bottle of reagent.
12/5 : 8.9
12/6 : 9.3
12/7 : 9.3
12/10: 9.6
12/11: 10.2
I was confused why my Alk is rising so much, so I immediately tested again with an entirely new sample.
12/11 #2 : 9.5
The only thing I'm dosing to affect Alk is 10mL of All-for-Reef
I also dose 10mL of vinegar early in the day
AWC 1gallon per day with Nyos salt that mixes to ~ 8.4
Tank has about 90gallons of total volume
pH swings from roughly 8 to 8.15
Salinity is at 1.026
Additionally, I'm very particular about how I test. I use a lab micropipette with new, disposable tips each time. One pipette for 10mL and another for 1mL. I wipe the cuvettes the same and even insert them into the checker facing the same direction. These tests should be as consistent as my hobbyist-self can provide.
My questions:
Why such an increase with such a small dose of A4R?
9.5 to 10.2 in back-to-back readings is quite the disparity imo. Even if this is within an acceptable range as to the accuracy of a Hanna checker, how can you trust and act on results like this?
Any suggestions on how to dial this in? I believe I'm already below the recommended starting dosage for A4R.
12/5 : 8.9
12/6 : 9.3
12/7 : 9.3
12/10: 9.6
12/11: 10.2
I was confused why my Alk is rising so much, so I immediately tested again with an entirely new sample.
12/11 #2 : 9.5
The only thing I'm dosing to affect Alk is 10mL of All-for-Reef
I also dose 10mL of vinegar early in the day
AWC 1gallon per day with Nyos salt that mixes to ~ 8.4
Tank has about 90gallons of total volume
pH swings from roughly 8 to 8.15
Salinity is at 1.026
Additionally, I'm very particular about how I test. I use a lab micropipette with new, disposable tips each time. One pipette for 10mL and another for 1mL. I wipe the cuvettes the same and even insert them into the checker facing the same direction. These tests should be as consistent as my hobbyist-self can provide.
My questions:
Why such an increase with such a small dose of A4R?
9.5 to 10.2 in back-to-back readings is quite the disparity imo. Even if this is within an acceptable range as to the accuracy of a Hanna checker, how can you trust and act on results like this?
Any suggestions on how to dial this in? I believe I'm already below the recommended starting dosage for A4R.