Which fertalizer

Neither. Imo MG is plant poison. The "Miracle" is that the plants survive at all. Some of the best fertilizers include Bat & Seabird Guanos, Fish Emulsion/Hydrolyzed Fish, Blood Bone & Kelp Meals, Maxicrop & similar seaweed fertilizers, Worm Castings and high-Potassium ashes.
 
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