My question - is there a process in the tank that would allow the Ca in the water to increase over time without the addition of a supplement like 2 part?
I have been seeing an issue with the test results from my Trident over the last couple weeks where the readings do not seem to match my expectations based on dosing and assumed consumption.
On 2/10, I made a corrective does of 2 part and waited 1 day, at which time I tested my water with my Hanna getting a Calcium reading of 414 while the Trident reading was 422, these two readings were very close and I felt fine about that.
I also had turned off my 2 part dosers because i wanted to measure my consumption over a 3 day period.
The attached graph is my readings from this morning, the Ca is increasing after the initial drop after the corrective dose. The first 2 readings after the reading i checked against the hanna are within the stated level of precision of +/-15ppm (although the upward trend is concerning) but the reading form midnight is outside of that range. I'm waiting for noon so i can take a sample of tank water and test again with hanna so that there is no variation from the sample since that wen the next scheduled Trident test is.
Tank params
ph 7.9
temp 78.3
Ca 457
Alk 8.55
Mg 1330
TWV - ~140gals
tank is mixed reef and stable running 3 years.
I'm having a hard time envisioning the issues here, wondering if there are others factors so any help is appreciated.
I have been seeing an issue with the test results from my Trident over the last couple weeks where the readings do not seem to match my expectations based on dosing and assumed consumption.
On 2/10, I made a corrective does of 2 part and waited 1 day, at which time I tested my water with my Hanna getting a Calcium reading of 414 while the Trident reading was 422, these two readings were very close and I felt fine about that.
I also had turned off my 2 part dosers because i wanted to measure my consumption over a 3 day period.
The attached graph is my readings from this morning, the Ca is increasing after the initial drop after the corrective dose. The first 2 readings after the reading i checked against the hanna are within the stated level of precision of +/-15ppm (although the upward trend is concerning) but the reading form midnight is outside of that range. I'm waiting for noon so i can take a sample of tank water and test again with hanna so that there is no variation from the sample since that wen the next scheduled Trident test is.
Tank params
ph 7.9
temp 78.3
Ca 457
Alk 8.55
Mg 1330
TWV - ~140gals
tank is mixed reef and stable running 3 years.
I'm having a hard time envisioning the issues here, wondering if there are others factors so any help is appreciated.