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Thank you for your interest in getting your plants fed with Jack's Nutrients! Your FedEx tracking # will be emailed to you once your order has shipped.
Currently we are unable to ship online orders to Canada. If you are looking to place an order to ship to Canada, shoot us an email at or give us a call today and we can help connect you to one of our distribution partners north of the border. 

Jack's 321

In stock
Product Details

You be the scientist, but let Jack’s help! This kit is designed to allow you to tweak your Nutrients to achieve your balance of Part A and Part B. Some growers follow our Jack’s 321 program with this combination of formulas and achieve the elusive flexibility and stability in many different growing environments.

What’s included:

  • Jack’s 15-6-17 Clone 1 kg bag
  • Jack’s 5-12-26 Part A 1 kg bag
  • Jack’s 15-0-0 Part B 1 kg bag
  • Jack’s 10-30-20 Bloom 1 kg bag
  • Jack’s 7-15-30 Finisher 1 kg bag
  • Jack's Magnesium Sulfate-Epsom Salts 1 kg bag
  • Jack's 3.5 Gallon Mixing Bucket with Lid
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