Hick
Git "R" lit
- Joined
- Apr 19, 2005
- Messages
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N-P-"C".. 
Calcium is not a major nutrient, and can cause lockout problems if over applied. I've never encountered a fertilizer comprised of.. " nitrogen, potassium, and calcium - roughly equal amounts of calcium and nitrogen"....What is the Brand name?...surely there is info on the www
It isn't highly unusual for ferts to not contain magnesium, though mj does require a higher concentration of it than most plants. Dolomite lime is an excellent source of magnesium. Just mix in 1-2 tbsp. per gallon of soil.
Foliar feeding epsoms should continue untill you've corrected the problem. But, I would mist with fresh water at intervals in between, to wash off the excess salts. They could eventually plug the pores and cause more problems.
Add a tblsp of epsoms to a gallon of water when you water, untill you are ready for transplant, then mix the lime to your new medium.(Lime also acts as a ph buffer, which you also need it appears)
"If the starting water is above 200 ppm, that is pretty hard water, that will lock out mg with all of the calcium in the water. Either add a 1/4 teaspoon per gallon of epsom salts or lime (both will effectively reduce the lockout or invest into a reverse osmosis water filter.
Mg can get locked-up by too much Ca, Cl or ammonium nitrogen. Don't overdo Mg or you'll lock up other nutrients."
Calcium is not a major nutrient, and can cause lockout problems if over applied. I've never encountered a fertilizer comprised of.. " nitrogen, potassium, and calcium - roughly equal amounts of calcium and nitrogen"....What is the Brand name?...surely there is info on the wwwIt isn't highly unusual for ferts to not contain magnesium, though mj does require a higher concentration of it than most plants. Dolomite lime is an excellent source of magnesium. Just mix in 1-2 tbsp. per gallon of soil.
Foliar feeding epsoms should continue untill you've corrected the problem. But, I would mist with fresh water at intervals in between, to wash off the excess salts. They could eventually plug the pores and cause more problems.
Add a tblsp of epsoms to a gallon of water when you water, untill you are ready for transplant, then mix the lime to your new medium.(Lime also acts as a ph buffer, which you also need it appears)
"If the starting water is above 200 ppm, that is pretty hard water, that will lock out mg with all of the calcium in the water. Either add a 1/4 teaspoon per gallon of epsom salts or lime (both will effectively reduce the lockout or invest into a reverse osmosis water filter.
Mg can get locked-up by too much Ca, Cl or ammonium nitrogen. Don't overdo Mg or you'll lock up other nutrients."
