KH to high

[rmw4547]

My KH is at 15 how do I lower it?

[Dagrape]

Water changes and wait patiently for it to drop on its own.

[Hop]

What are we testing with and how did it get there. I'm not Unless you spilled a ton of buffer or have other issues I can't see it being there.

[tdwyatt]

What is your calcium, your salinity, and what test kit did/do you use for this value?

What are your pH values over 24 hours (every 6 hours for 24 hrs)?

As an aside, please post the units (dKH, PPM, mEq???) when posting test values.