re-amending used Happyfrog soil - advice needed, cal/mag?

[Kegdas216]

Re-amending used soil with Gaia Green 4-4-4 and worm castings. Shouldn't I be adding something else for calcium and magnesium? I was thinking Epsom salt and gypsum, but I'm still pretty new to organic growing, and this will be my first time reusing soil. Any advice would be appreciated.

Edit - basalt rock dust maybe?

 

[Eledin]

I personally use dolomite lime, the ratio of cal-mag it has is really good. For extra magnessium I add epsom salts once per month with the water. The thing with epsom salts is that they dilute very easily so Id rather use them with the water.

 

[Eledin]

If you check the chemical composition of basalt rock and gypsum you will see that the cal-mag ratio is not as good as with dolomite lime. That said basalt rock dust or any kind of volcanic rock is good for micronutrients, minerals like iron and silica. I use dolomite lime and volcanic rock dust from Java island.

 

[Eledin]

Looks like your all purpose fertilizer has you covered

 

[Eledin]

Fisbone meal, phosphate rock, insect frass, oyster shell and gypsum have calcium

 

[Kegdas216]

Well, now I feel foolish. Ha. Thank you! I should have checked their website. I've always seen people loading their soil up on the YouTube with multiple products. I figured surely I needed more than just the Gaia Green.

 

[Eledin]

Well, now I feel foolish. Ha. Thank you! I should have checked their website. I've always seen people loading their soil up on the YouTube with multiple products. I figured surely I needed more than just the Gaia Green.

Dont worry hahaha happens. Also maybe some people like to add more things, I have never used gaia green I buy all the ammendments myself but it seems like is well packed with everything they need.

 

[Kegdas216]

The thing is, I am trying to prevent this. I have a grow going now and planned on re-amending to get a second tent going. I thought it was a calcium or magnesium deficiency. The exact same thing happened to my last grow, both times around week two of flower. Am I just not top dressing soon enough? I top dress every three weeks.

When I top dress, I am doing one tablespoon per gallon of soil.

First topdress: 50/50 blend of 4-4-4 and 2-8-4. And worm castings.

Second top dress: 75% 2-8-4 / 25% 4-4-4

 

[Kegdas216]