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- Aug 3, 2022
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So I did some maintenance on the trident and dos systems the other day.
I replaced the Trident reagents and refilled my alk and calc dosing reservoirs. I've been using Seachem Reef Builder and Seachem Calcium, mixing per the instructions.
This is the second time I've re-upped the reservoirs, and the second time I've renewed the trident reagents, but the first time I've done both at once.
Immediately after doing this maintenance my calcium skyrocketed above 650 and magnesium dropped significantly. I turned off the calc dosing pump and let it ride hoping it would go down on it's own, while leaving the alk dosing pump on.
It's been a few days now and magnesium continues to gradually decline and the calcium seems to be gradually increasing.
This is weird..... I'm a bit concerned, but I haven't noticed any impacts to fish or inverts. There aren't any corals in the tank yet.
Anyways, I think I'm about to try water changes next, but how worried should I be really?
670ppm for Calc seems high. I am trying to maintain about 9dkh alk, 440ppm calc and 1400ppm magnesium.
Thoughts? Thanks in advance.

I replaced the Trident reagents and refilled my alk and calc dosing reservoirs. I've been using Seachem Reef Builder and Seachem Calcium, mixing per the instructions.
This is the second time I've re-upped the reservoirs, and the second time I've renewed the trident reagents, but the first time I've done both at once.
Immediately after doing this maintenance my calcium skyrocketed above 650 and magnesium dropped significantly. I turned off the calc dosing pump and let it ride hoping it would go down on it's own, while leaving the alk dosing pump on.
It's been a few days now and magnesium continues to gradually decline and the calcium seems to be gradually increasing.
This is weird..... I'm a bit concerned, but I haven't noticed any impacts to fish or inverts. There aren't any corals in the tank yet.
Anyways, I think I'm about to try water changes next, but how worried should I be really?
670ppm for Calc seems high. I am trying to maintain about 9dkh alk, 440ppm calc and 1400ppm magnesium.
Thoughts? Thanks in advance.


