NPK Industries NPK Stack - 16 oz

Foliar Spray Supplement for Turnover Stage - 16 oz

Adding a supplement to an established feeding program can mean rebuilding your schedule. NPK Stack is designed to be used with all nutrient regimens and feeding programs, so you keep your current routine. You apply it as a foliar spray at turnover and reapply every 7 days for 6 weeks.

The 16 oz bottle suits hobbyists, trial runs and small indoor gardens. Growers running larger rooms can buy multiple units as needed.

Key Features & Benefits

• Foliar spray application — applies directly to plant foliage with no change to your reservoir routine.
• Works with any feeding program — fits alongside the nutrients you already use.
• Clear schedule — apply at turnover, then every 7 days for 6 weeks.
• 16 oz bottle — a manageable size for trials and small setups.

Who Should Use NPK Stack

Growers who want to add a foliar supplement at turnover without altering their base nutrient program. It suits home gardeners and licensed commercial growers who follow a set schedule.

About NPK Industries NPK Stack

NPK Stack is a supplement from NPK Industries, sold as a single 16 oz unit. It is the companion to the brand's Multiply product, which is added every 7 to 10 days from week 1 to turnover before Stack is applied.

Frequently Asked Questions

Q: When do I apply NPK Stack?
A: Apply it as a foliar spray at turnover. Then reapply every 7 days for 6 weeks.

Q: Will it work with my current nutrients?
A: It is designed to be used with all nutrient regimens and feeding programs. You do not need to replace your base nutrients.

Q: What is a foliar spray?
A: A foliar spray is a liquid applied to plant leaves instead of the root zone. It is a separate step from reservoir or irrigation feeding.

Q: Do I need Multiply as well?
A: The label directions describe using Multiply first, every 7 to 10 days from week 1 to turnover, and then Stack. Check the product label for full directions.

Q: How big is the bottle?
A: It holds 16 oz and measures about 4 in long, 1.8 in wide and 6 in tall. It ships at about 1.5 lb.