I did a water change yesterday and did water testing today and am just not sure what to make of this. Since the water change my gorgonian and GSP are both really unhappy. The single SPS I have in the tank is just as unhappy as it's always been and probably well on it's way to death
Here's the results by date:
3/17/24: pH: 8.15, Alk: 7.6, Ca: 347, PO4: 0.06, NO3: 9.6
3/28/24: pH: 8.2, Alk: 8.0, Ca: 445, PO4: 0.00, NO3: 9.7
3/28/24: Did water change
4/1/24: pH: 7.8, Alk: 7.9, Ca: 420, PO4: 0.07, NO3: 1.57
I run kalk in the ATO and was more than a bit surprised that a water change dropped the pH as much as it did.
Anyway, how would you interpret these tests and what should I change in the future? I usually do water changes weekly and, at the advice of someone on here, bought a Salifert alkalinity test and am doing that daily now. Also, what would cause the GSP (and gorgonian) to close up?
I'm trying to get things figured out so that maybe, one day, I can keep an sps alive.
Here's the results by date:
3/17/24: pH: 8.15, Alk: 7.6, Ca: 347, PO4: 0.06, NO3: 9.6
3/28/24: pH: 8.2, Alk: 8.0, Ca: 445, PO4: 0.00, NO3: 9.7
3/28/24: Did water change
4/1/24: pH: 7.8, Alk: 7.9, Ca: 420, PO4: 0.07, NO3: 1.57
I run kalk in the ATO and was more than a bit surprised that a water change dropped the pH as much as it did.
Anyway, how would you interpret these tests and what should I change in the future? I usually do water changes weekly and, at the advice of someone on here, bought a Salifert alkalinity test and am doing that daily now. Also, what would cause the GSP (and gorgonian) to close up?
I'm trying to get things figured out so that maybe, one day, I can keep an sps alive.