Need some help here.. First timer..

[Blackmelo]

I worked out the concentration of your mix adding only Bio-Bizz Grow:




Seems like you might even be burning your plants with a mix that strong.

 

[sproutco]

I tried to follow your calculation but I just couldn't figure out where you got 9.9% from. My epson salt says 100% magnesium sulphate heptahydrate. I cannot follow your chemical breakdown either I'm afraid.

That's right your epsom is pure. But, there is only about 10% magnesium in magnesium sulphate heptahydrate. Here is the formula for it. MgSO4·7H2O There is one atom of magnesium, one atom of sulfur, 11 atoms of oxygen, and 14 atoms of hydrogen. Find the atomic weights on a periodic table of the elements. mg=24, o=16, s=32 h=1. 1 x 24 for magnesium, 1 x 32 for sulfur, 11 x 16 oxygen, and 14 x 1 hydrogen for a total of 246. You have 24/246 magnesium = .098 or 9.8% magnesium :smile:

So 1 teaspoon in 10 liters would give you 54 ppm magnesium. 5.4 grams divided by 10 liters = .54 grams per liter x 10% magnesium = .054 grams or 54 mg per liter = 54 ppm (1mg/L=1ppm)

Thats neat you got the numbers for the bottle. Please share so I can put them in also. Did you put nitrogen twice to get over 500 he is using? Is there 4% nitrogen as ammonia and nitrate for 8% total?

 

[redpenguin01]

Problem fixed guys.. I pulled back the top inch of soil and added 1tsp of dolomite per gallon of soil (5mLx5gal=25mL per pot). I also added 1tsp of espsome in a gallon of water and things cleared up right away.

Just thought I'd give an update.