Hi all,
I recently switched to Fritz RPM since the parameters seemed balanced and a little more conservative than where I was running the tank.
I've been a little WC-happy lately, doing 30% changes basically whenever I have the chance.
I foolishly did not check the alk on the new water, assuming that if Fritz says itll mix to ~9dKH, it would mix to 9dKH.
I changed out 25% of our water today, and did not dose any alk or calcium. Generally, I skip dosing on WC days.
I tested tank alk today and saw a reading of 11.8 dKH. I checked twice with my existing salifert test, and then ran out and bought another salifert kit. Old water from todays WC read 10.5 dKH. I had ramped down to 9dKH before doing the first WC with Fritz.
By my (crude) estimation, in order for a 25% WC to pull alk up 1.3 dKH, it should be 5.2dKH higher than the tank. Crudely, the numbers seem to suggest the water I made up was around 15 or 16 dKH. I will make up a small batch to test shortly.
I know that borate could be inflating the alk reading substantially.
What's my best course of action? I'm thinking my best way to proceed is to embrace this new normal and dose to maintain 11.8dKH for a couple of weeks to allow things to settle before gradually bringing it down. I'm concerned about ceasing alk dosing and letting the number fall down to 9dKH if borate is influencing the reading, as this is not unheard of with Fritz.
I recently switched to Fritz RPM since the parameters seemed balanced and a little more conservative than where I was running the tank.
I've been a little WC-happy lately, doing 30% changes basically whenever I have the chance.
I foolishly did not check the alk on the new water, assuming that if Fritz says itll mix to ~9dKH, it would mix to 9dKH.
I changed out 25% of our water today, and did not dose any alk or calcium. Generally, I skip dosing on WC days.
I tested tank alk today and saw a reading of 11.8 dKH. I checked twice with my existing salifert test, and then ran out and bought another salifert kit. Old water from todays WC read 10.5 dKH. I had ramped down to 9dKH before doing the first WC with Fritz.
By my (crude) estimation, in order for a 25% WC to pull alk up 1.3 dKH, it should be 5.2dKH higher than the tank. Crudely, the numbers seem to suggest the water I made up was around 15 or 16 dKH. I will make up a small batch to test shortly.
I know that borate could be inflating the alk reading substantially.
What's my best course of action? I'm thinking my best way to proceed is to embrace this new normal and dose to maintain 11.8dKH for a couple of weeks to allow things to settle before gradually bringing it down. I'm concerned about ceasing alk dosing and letting the number fall down to 9dKH if borate is influencing the reading, as this is not unheard of with Fritz.