i would stay away from old soil that might have already been used, too many unknown problems could lead to a unhealthy plant.

but if your set on using it.....you will need some ferts. N-P-K (nitrogen, phosphorus, and potassium.) during your vegging you will need high nitrogen and low P K. when you switch to flowering you will need more of P and K. on all fertilizers there will be three numbers at the bottom (#-#-#) which you will use in either veg or flower cycle.
keeko Reviewed by keeko on . outdoor grow no nutes can i grow my plants without any nutes?i have 12 plants at 2 1/2 weeks old.i dont have access to any nutes?any ideas Rating: 5