jsker
Reefing is all about the adventure
View BadgesStaff member
Super Moderator
Partner Member 2024
Excellence Award
Reef Tank 365
Article Contributor
Hospitality Award
Ocala Reef Club Member
R2R Secret Santa 2023
My Tank Thread
- Joined
- Apr 11, 2015
- Messages
- 25,008
- Reaction score
- 80,077
- Location
- Saint Louis
- What state or country do you live in
- Missouri
Subtract from 100?
For example .o4 after taking your measure from the bottom of the plunger, or 40-100=60 which give the reading of 1200 ppm magnesium.



