Gold Label Ultra Mg is a magnesium/sulfuric additive for all plant development stages.
It contains high quality magnesium chelate which is easily absorbed by your plants in a wide pH range.
Use continuously on inert mediums and as a replenishment on peat and compost mediums.
Use in combination with Gold Label Soil or Hydro nutrients, 0,25 - 0,5 ml/liter. Never combine pure nutrients, always mix in water. Shake bottles before use, store at room temperature.