Originally Posted by longhornxtreme
Did I offend anyone? I've read all those threads before, I was just wondering if there was a rough estimate for how many ppms per dose. Just makes it alot easier to calculate. Even going by Barr's estimated Teaspoons, it is significantly different depending on whether you use the large tank size or small tank size in fertilator.
I know what you mean by the variations.
This may help. You can use Chuck's Calculating dosages of fertilizer elements for a planted tank
along with the fertfriend
and the fertilator
with Barr's dosing charts to figure how to make the dosing solutions.
Here's one of the original EI dosing charts for a 29 gallon aquarium. It's what I use to figure the ppm's that need to be dosed. It's like hoppycalif said: "The EI method is based on the belief that the actual concentrations of fertilizers in the water is not critical. They need to be adequate all of the time, but may be more than what the plant needs are. So, the dosing is always given as an approximation."
These calculations are from using the fertilator.
1/4 tsp of KNO3 = 7.26 ppm of NO3 and 4.58 ppm of K
1/16 tsp of KH2PO4 = 2.23 ppm of PO4 and 0.92 ppm of K
1/16 tsp of K2SO4 = 1.63 ppm of K
1/16 tsp of CSM+B = 0.1 ppm of Fe
One dose of KNO3, KH2PO4 and K2SO4 =
7.26 ppm of NO3
2.23 ppm of PO4
7.13 ppm of K
One dose of CSM+B =
0.1 ppm of Fe
I always dosed dry with spoons, but here is a way to mix solutions. It's from Rex Grigg's site: http://www.rexgrigg.com/dosing.htm
I hope that this may help you, longhornxtreme.