The Planted Tank Forum - View Single Post - Help How To Dose K2SO4 in 10g tank
View Single Post
Old 02-26-2013, 10:50 PM   #6
Wannabe Guru
Zorfox's Avatar
PTrader: (5/100%)
Join Date: Jun 2012
Location: Gainesville, FL
Posts: 1,727

To reach a target of 10ppm (on 7 gallons) you add 590mg to the water. One teaspoon of K2SO4 is 6400mg. To mix 250ml solution and use a 5ml dose we need to multiply 50 (doses in 250ml) x 590mg (dose to reach 10ppm) = 29,500mg. How many teaspoons? Divide 6400 into 29,500 = 4.6 teaspoons. Add that into 250ml of water and use 5ml per dose.

I use the API phosphate kit. Seems to work fine.
Zorfox is offline   Reply With Quote