ALK question?

[fishrambo]

I have had a sudden drop in my alk lvl no coral just fish and live rock neptune trident auto dosing. The drop is pretty dramatic i am ordering a hanna tester to test against to make sure its correct and have recalibrated trident. Has anyone had a alk dramatic drop like thing and what would cause it if the reading is correct? Thanks

 

[The_Paradox]

I have had a sudden drop in my alk lvl no coral just fish and live rock neptune trident auto dosing. The drop is pretty dramatic i am ordering a hanna tester to test against to make sure its correct and have recalibrated trident. Has anyone had a alk dramatic drop like thing and what would cause it if the reading is correct? Thanks

View attachment 3481442

How is calcium? Coralline will crush both.

 

[fishrambo]

I dont have coraline yet i had plenty in my previous tank trying to delay the inevitable lol but calcium is in the 460's as of now.