Stack is a powerful natural plant fertilizer made from extracts of kelp and other plants. These potent compounds encourage leaf growth, bud and flower formation, and improve crop uniformity, growth and quality. Stack gives the plant tools to reach its full genetic potential.


When used as a foliar or root drench, Stack increases micronutrient uptake and corrects minor potassium deficiencies.


Instructions for use

May be used as a foliar spray or root drench, one application weekly. Safe for use in irrigation systems. Stack contains organic ingredients and may separate in storage. Shake well before use.


Application Timing

Apply Stack from the final week of vegetative growth to week 4-5 of flowering, or once plants stop growing vertically.


Root Drench

Mix 1-2ml per gallon of water in a weekly mix. May be mixed with regular fertilizer recipe. Add last to reservoir.


Foliar Spray

Mix 7ml per gallon water and spray thoroughly once weekly. Spray with lights off and allow to dry before turning on. Do not spray past week 3 flower.


Transplant Use

Mix 2ml per gallon water and bare root soak for 30-60 seconds prior to transplanting or water in solution after transplanting. Stack may reduce transplant stress and improves plant vigor.


Seed Treatment

Mix 4ml per gallon water and soak seed for 1-2 minutes before planting. Stack may increase germination rates and plant vigor.

Athena Blended Stack

PriceFrom £100.00