View Single Post
Unread 04/13/2018, 02:11 PM   #11
ramseynb
Registered Member
 
Join Date: Nov 2010
Location: New Braunfels, TX
Posts: 630
Quote:
Originally Posted by Tripod1404 View Post
Natural sea water has a calcium around 410 ppm not 420. For 420ppm, balanced alk value is around 8.5dKH.

https://www.advancedaquarist.com/2002/11/chemistry


Sent from my iPhone using Tapatalk
From the article you sourced:

"2.5 - 4 meq/L or 7 - 11 dKH or 125 - 200 ppm CaCO3 equivalents

Calcium:

380 – 450 ppm calcium ion or 950 - 1125 ppm CaCO3 equivalents

If you are anywhere within these ranges for both parameters, you do not need to perform any correction on your tank chemistry, though you may choose to do so for other reasons. In this sense it makes no difference what the relationship is between the two values. If alkalinity is 4 meq/L, it is not inherently any “better” for calcium to be at 380 ppm or 450 ppm."


__________________
How do you make an octopus laugh?

Ten tickles!
ramseynb is offline   Reply With Quote