I did my normal weekly water testing yesterday, on both tanks.
I try and keep alkalinity around 8-8.5 or thereabouts. It has been dropping low for about 2 weeks to 7 or less so I had been increasing the daily alkalinity dosage to compensate.
It was still low, and I’m wondering did I mix the sodium bicarbonate up to weak. I’m normally very careful on this sort of thing.
Anyway, I tested the ‘big house’ and alkalinity was 6.8. That was the last bit of Hanna testing reagent so I opened the new bottle and did a retest. It was 14.4!! The S650 was 14!
So I’m thinking what the heck, which is correct. So I opened another spare bottle of reagent and re tested. 14……
Ive emailed Hanna to see what they say, all reagents are from the same batch and well within date.
So I wonder if it can go off…..??
I’ve ordered a NYOS test kit because their others are very good, I’ve turned off alkalinity addition completely until I can confirm the correct reading, but I’m suspecting it’s on the high side due to a bad reagent. I’ve been using it for a while and until the last few weeks, it’s seemed to be producing ‘expected’ results.
I try and keep alkalinity around 8-8.5 or thereabouts. It has been dropping low for about 2 weeks to 7 or less so I had been increasing the daily alkalinity dosage to compensate.
It was still low, and I’m wondering did I mix the sodium bicarbonate up to weak. I’m normally very careful on this sort of thing.
Anyway, I tested the ‘big house’ and alkalinity was 6.8. That was the last bit of Hanna testing reagent so I opened the new bottle and did a retest. It was 14.4!! The S650 was 14!
So I’m thinking what the heck, which is correct. So I opened another spare bottle of reagent and re tested. 14……
Ive emailed Hanna to see what they say, all reagents are from the same batch and well within date.
So I wonder if it can go off…..??
I’ve ordered a NYOS test kit because their others are very good, I’ve turned off alkalinity addition completely until I can confirm the correct reading, but I’m suspecting it’s on the high side due to a bad reagent. I’ve been using it for a while and until the last few weeks, it’s seemed to be producing ‘expected’ results.