ALK Spike?

[ADAM]

Preface by saying that I have NSW mixing already.

I was having an issue with my DDR fittings and while checking the issue I had the dosing lines going into a separate container. Well long story short.... I set the container down on the rim of the sump to move the tools I had out and of course I somehow pull the pump cord spilling the container into the return chamber.
My ALK is usually 8.7 now the ALK IS 12.21!!!

What’s my best plan of action?
About 90 gallon total water volume (92 gallon tank, 15-20 gallon volume) Already have 25 gallons of new water mixing using Tropic Marine that usually mixes right at 7dk.

 

[simsimsim]

12 is still "safe", the sudden jump is the problem. water change is best bet but do it slowly

 

[Sparkymarc]

+1 on water change. Like simsimsim said not too much at a time. Sudden changes are not good.

 

[Auquanut]

Agree with a moderate water change. I wouldn't do too many right away as the alk is already there and is not at a dangerous level. Best not to cause multiple swings in your parameters to correct the issue. I'd discontinue dosing alk until the level reaches a point you're comfortable with, thus allowing it to drop more slowly. Just what I would do.