Calcium dosing help

[Kmsutows]

Alright so I'm not confident in my calculations. I'm switching from Red Sea foundation calcium + A to brightwell aquatic Calcion. I typically dose 7-10ml of red sea calcium a night which by no instructions and just a bad picture I'm assuming means 1ml in 100L increases 2ppm. Calcion says 1ml will increase a gallon by 40ppm. Does this mean I only need to add 5ml of Calcion? Red seas concentration says 200,000 mg/L ppm and brightwell says 150,000ppm I'm assuming it means in the 500ml bottle. Any help is greatly appreciated

 

[Randy Holmes-Farley Verified Community Expert]

Assuming this statement is correct:

"Red seas concentration says 200,000 mg/L ppm and brightwell says 150,000ppm"

Then Brightwell need smore by a factor of 200,000/150,000 = 1.33.

So now dose 1.33 x 7-10 mL = 9 - 13 mL