I performed a PH profile but I cant quite get the numbers to make sense to me.
I use JBL's "updated" drop checker solution which turns green at 20 ppm. I tuned injection to this ~20ppm target, possibly a hair over to a slightly yellower hue of green.
I measured the PH using a two point freshly calibrated Hanna PH checker (accuracy of ±0.2 pH and resolution of 0.1 pH).
Both my tank water and tap water has a KH of 3. The waterworks add NaOH to raise the PH of the tapwater.
My degassed tank water had a PH 7.2. The total drop was 1 to 1.1 degrees pH.
I thought that I would see less than a 1 point drop of PH seeing as I am not targeting 30 ppm.
Could someone explain to me how this works where 20ppm = 1 PH drop?
Could it have anything to do with NaOH from the water supply or high atmospheric room CO2 where the degassed sample was?
Very grateful if someone could lay it out for me
I use JBL's "updated" drop checker solution which turns green at 20 ppm. I tuned injection to this ~20ppm target, possibly a hair over to a slightly yellower hue of green.
I measured the PH using a two point freshly calibrated Hanna PH checker (accuracy of ±0.2 pH and resolution of 0.1 pH).
Both my tank water and tap water has a KH of 3. The waterworks add NaOH to raise the PH of the tapwater.
My degassed tank water had a PH 7.2. The total drop was 1 to 1.1 degrees pH.
I thought that I would see less than a 1 point drop of PH seeing as I am not targeting 30 ppm.
Could someone explain to me how this works where 20ppm = 1 PH drop?
Could it have anything to do with NaOH from the water supply or high atmospheric room CO2 where the degassed sample was?
Very grateful if someone could lay it out for me
07:00 - CO2 on
07:20 - 6.7, first reading got a bit delayed
07:30 - 6.6
08:00 - 6.4
08:30 - 6.3
09:00 - 6.2
09:30 - 6.2 - Light ramp up
10:00 - 6.2 - Light full
10:30 - 6.2
11:00 - 6.2
11:30 - 6.2
12:00 - 6.2
12:30 - 6.2
13:00 - 6.1 *
13:30 - 6.2 *
14:00 - 6.1 *
14:30 - 6.1 *
15:00 - 6.1 *
15:30 - 6.2 *
16:00 - 6.1
16:30 - 6.1
17:00 - 6.1 - CO2 off
17:30 - 6.2
18:00 - 6.3 - Light ramp down
18:30 - 6.4 - Light off
19:00 - 6.5
22:30 - 6.9
*Meter was flickering a fair bit between 6.1 and 6.2 on the values marked, I think the value was very close between them.
07:20 - 6.7, first reading got a bit delayed
07:30 - 6.6
08:00 - 6.4
08:30 - 6.3
09:00 - 6.2
09:30 - 6.2 - Light ramp up
10:00 - 6.2 - Light full
10:30 - 6.2
11:00 - 6.2
11:30 - 6.2
12:00 - 6.2
12:30 - 6.2
13:00 - 6.1 *
13:30 - 6.2 *
14:00 - 6.1 *
14:30 - 6.1 *
15:00 - 6.1 *
15:30 - 6.2 *
16:00 - 6.1
16:30 - 6.1
17:00 - 6.1 - CO2 off
17:30 - 6.2
18:00 - 6.3 - Light ramp down
18:30 - 6.4 - Light off
19:00 - 6.5
22:30 - 6.9
*Meter was flickering a fair bit between 6.1 and 6.2 on the values marked, I think the value was very close between them.