First time changing to a new bottle of R0871 tonight and getting different FC results... not sure if this is normal and I should just trust the new and carry-on, or do some more troubleshooting to figure out the discrepancy and be confident with the new result? The older bottle is about 5months old (original t-100) newer bottle is 1mo old (T-100 refill).
todays results:
10ml FC test old- 11.5
10ml FC retest old -11
10ml FC test new -15
25ml FC test new - 15.4
Other results
CC - 0.5
ph - 7.9
TA- 70
CH - 200*
CYA - 50
Temp - 55F
CSI: -0.24
*Sidenote - i hadn‘t added more CH because CSI was manageable during the summer, but with lower temps now I think I’m going to need to so I can manage ph between 7.6-8... thoughts?
todays results:
10ml FC test old- 11.5
10ml FC retest old -11
10ml FC test new -15
25ml FC test new - 15.4
Other results
CC - 0.5
ph - 7.9
TA- 70
CH - 200*
CYA - 50
Temp - 55F
CSI: -0.24
*Sidenote - i hadn‘t added more CH because CSI was manageable during the summer, but with lower temps now I think I’m going to need to so I can manage ph between 7.6-8... thoughts?