ALK at 15-1dkH Maybe a little high lol

I overdosed with a little ALK and i need help decided rather to do a water change or leave it and let it fall naturally? My Ca is 420, PH 8.12, SG 1.0265 MAG 1400 so everything is is perfectly where i want it.

 

yeah i wouldnt do anything to it. I like to keep mine between 13 to 15, so 16 is not too high.

 

Thank you i figure that almost 7ppm of Ca have to drop for every 1dkH so should take a day or so.

 

I have always heard 12 is the highest you want to go, and any sudden change like that can effect your corals. hope everything is ok

 

be careful with high alkalinity.
http://www.3reef.com/forums/asap/losing-sps-colonies-fast-127232.html
my alk went up as high as 16 and almost wiped out my whole tank. if you notice some burn marks on your coral tips (sps) then they are starting to burn.

 

Everything is okay looks like it has dropped already to 14dkH this morning so not to bad. I like ot maintain it about 12-14 range. Nothing looks burnt yet just my pocillpora and leather looks kind stressed. My water has cleared up though from last night when it was a little white.

 

Ok, I am having the same problem except mine is an 11 and never changes. I'm also trying to figure out why my plate coral, yellow polyps, and scold won't open like they used to. Ph is 8.2, nitrate 0, nitrate 0, ammonia 0, phosphate 0, alk 11 dkh (196.6ppm) , temp is steady between 72-76. Any thoughts?

 

What is you Ca, Mag and SG?

 

Ca is 460 sg is 1.024 mg? Don't know don't have a test for that.

 

you need to get a mag kit. Ca, Mg kH and SG are related and if one is off it will likely through off you other paremeters. IME if you dont have your mag stable, you will not be able to stabelize the kh