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Humboldts Secret Base A & B Bundle – World's Best Base Nutrient System – Liquid Nutrient/Fertilizer for Outdoor & Indoor Plants – Supports Vegetative and Flowering Stages of Plants – (2.5 Gallon Set)

  • Based on 3,184 reviews
Condition: New
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Availability: 12 left in stock
Fulfilled by Amazon

Arrives Thursday, May 29
Order within 7 hours and 24 minutes
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Size: 2.5 Gallon


Features

  • COMPLETE MACRONUTRIENT PROFILE FOR PLANT NUTRITION: The combination of our Base A & B Bundle results in a complete feed for rapidly growing flowering plants and indoor plants. Our signature blend consists of Nitrogen, Phosphorus, Potassium, Calcium, Magnesium, and more.
  • EASY-TO-USE TWO-PART SYSTEM: Simple use both bottles at equal rates throughout the entire growing cycle, from the beginning of the vegetative stage until the end of the flowering stage. We recommend application with every watering for maximum results.
  • HYDROPONICS EXCELLENCE FOR ALL CULTIVATION MEDIUMS: Our cutting-edge system excels in hydroponics, delivering exceptional performance across all grow mediums, whether it's for indoor plants in potting soil, aquaponics setups, or coco coir cultivations.
  • COMMERCIAL-GRADE AND GARDEN-FRIENDLY: Our two-part base system is both commercial-grade and garden-friendly, ensuring the optimal health of your plants and flowers. Its made from quality ingredients that are 100% water soluble and pH-balanced for ease of use.
  • APPROPRIATE FOR ALL PLANT LIFE: Base nutrients are the building blocks of all plant life. Thousands of home and commercial growers use Humboldts Secret Grow & Bloom Base System. It works on all plants, trees, flowers, bushes, and lawns.

Brand: Humboldts Secret


Item Form: Liquid


Coverage: Medium


Liquid Volume: 2.5 Gallons


Mixing ratio: 11


Brand: Humboldts Secret


Item Form: Liquid


Coverage: Medium


Liquid Volume: 2.5 Gallons


Mixing ratio: 11


Specific Uses For Product: Hydroponics


Target Species: all plant life


Manufacturer: Humboldts Secret


Number of Items: 2


UPC: 648260730451


Unit Count: 640 Count


Package Dimensions: 15 x 13.8 x 9.5 inches


Item Weight: 50.8 pounds


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great nutrients
Size: 32 Ounce
Wonderful results with a great price point and high grade nutrients. I switch between these and advance nutes depending on price or sales and they make plants grow like crazy. The nutes don't have horrible smell like some
Reviewed in the United States on February 1, 2025 by Nick Sheppard

  • Gentle but effective, highly recommended
Size: 32 Ounce
I’ve been using these fertilizers for the past couple of months and I really like them! My plants are happy (both hydroponic and soil) and I’ve not experienced any harsh effects like leaf burn, even on young seedlings. My hydro tanks’ pH also doesn’t fall off the charts every time I add new water with nutrients, so I have to wonder if there may be a buffering agent present… one of life’s mysteries. In any case, the actions of the product are gentle but effective for good plant growth. On my wish list is product labeling for smaller quantities shy of a gallon (e.g. mix X amount of product with 1 gallon of water). I often water by the cup or the liter and rarely a gallon in my home setup, so I had to make my own conversion chart. If you haven’t yet found a solid, reliable and affordable option for your plants, and you’re looking for something in the all-purpose category that most plants will love, I highly recommend this. Also, it ships to California markets which many fertilizers do not. ... show more
Reviewed in the United States on May 29, 2024 by Tilo

  • Easy to use.
Size: 1 Gallon
Water soluble. Easy to use. Great results
Reviewed in the United States on December 30, 2024 by Marly S.

  • Great nutrients. Terrible seal
Size: 1 Gallon
The nutrients are awesome and i will continue to use them. They will almost always be leaking when you get them because the liquid will eat it's way completely through the seal and at times the bottle itself looks melted. I wish they would do something about this but it seems to be a common complaint and no change yet. I have had great results using the product and I don't buy it for the bottle. Still wish I would get a full gallon when I pay for a full gallon though. ... show more
Reviewed in the United States on January 16, 2025 by Kevin

  • Easy for a beginner!
Size: 8 Ounce
The media could not be loaded. This is my first attempt at hydroponics! This product was easy to use and my garden is growing like crazy, so it works! My plants are very healthy and taste delicious! The greens grows so well that I have to pick off of them and eat a big salad daily so I don’t run out of space! Happy customer! ... show more
Reviewed in the United States on December 11, 2024 by Debbie

  • The best
Size: 8 Ounce
Humboldt secret is the best plant food you can get you don’t need so much of it so it lasts longer I’ll never go back to the other brands that don’t work after using this you can see the difference after about 2 days I recommend using this product if you have a garden.
Reviewed in the United States on December 18, 2024 by Bill Grubbs

  • Wants you to buy additional products.
Size: 32 Ounce
This stuff probably works great. Nothing noticeable after only a week. I have high hopes. I won't be buying anything more from this company because they suggest buying an additional product for it to work well. This was never mentioned in the information on the product description. I feel a little scammed, I would have bought it if it would have been mentioned. I bought this just for my regular garden veggies, I will write a glowing review if my garden does better than normal. A couple of months later and my garden has done the best it ever has, still won't buy it again because of the shady sales tactics. ... show more
Reviewed in the United States on July 15, 2023 by jeff anderson

  • Excellent Product.
Size: 32 Ounce
I have purchased these several times for my wife's Hydroponics System. Product works great and well worth the money. Highly recommend.
Reviewed in the United States on September 16, 2024 by DANIEL E. LABRIE

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