What's causing my alk drop?

[nbagnardi]

you don't want to do too much too soon and shock your system more than it is right now. i did 10% every 4 days but i have a 120 gallon system.

 

[nbagnardi]

I thought rule of thimb was 10 percent water change weekly. I am religious about that and 1 year in never had a problem.

that all depends on your tanks consumption, but pretty much on point for the most part.

 

[cromag27]

Water changes are dictated by tank parameters and conditions. looks lime you found your sweet spot. Good job! :)

I thought rule of thimb was 10 percent water change weekly. I am religious about that and 1 year in never had a problem.

 

[jmp21677]

I'm going to do a quick 10% today to adjust mag a little and hopefully settle things a bit. New salt arrives this week and I'll do 10% weekly and keep an eye on parameters