








🌱 Unlock your garden’s secret weapon for unstoppable growth!
Humboldts Secret Base A & B is a premium 2.5-gallon liquid hydroponic fertilizer delivering a complete nutrient profile with nitrogen, phosphorus, potassium, calcium, and magnesium. Designed for easy mixing and universal use across hydroponic, soil, and container setups, it supports all plant stages with a pH-balanced, water-soluble formula that ensures clean feeding and rapid, visible results.































| ASIN | B01IM88KIK |
| Best Sellers Rank | #5,073 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #199 in Garden Fertilizers |
| Brand | Humboldts Secret |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,351) |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 20 pounds |
| Liquid Volume | 640 Fluid Ounces |
| Manufacturer | Humboldts Secret |
| Number of Items | 2 |
| Package Dimensions | 15 x 13.8 x 9.5 inches |
| Specific Uses For Product | Hydroponics |
| UPC | 648260730451 |
| Unit Count | 640 Count |
K**R
...
Great product
J**H
Came in great shape works as labeled
I’ve been using these for my “tomato’s” and honestly works great makes your plant grow like crazy if it’s your first time maybe try there stater kit
A**R
Works well
Great for my hydroponic Lettuce
E**R
Measurements gore
This stuff seems to work, but the wording on the back is hilariously ambiguous, and I'm sure I'm adding the wrong amounts. It says "5-9ml/GAL A + B". First up, mixing metric and imperial measurements like that is confusing - it's a bit like saying "5-9 inches per kilometer". Beyond that, this wording could mean: 1) "5-9ml of A + B combined per gallon of water you are adding" 2) "5-9ml of A and 5-9ml of B per gallon of water you are adding" 3) "5-9ml of A + B combined per gallon of water in your tank" 4) "5-9ml of A and 5-9ml of B per gallon of water in your tank" I think it's option 2, but as a hydroponics noob I could see it being 3 or 4 too (maybe the plants pull all the nutrients out of the tank water so you need to replenish - dunno). Here are a few formulations of what I think they mean, using a consistent measuring system: * mix 1-2ml of each of A and B per liter of water you add * mix 1-2 parts of each of A and B with 1000 parts water, then add to your tank * mix 0.2-0.3 fl oz of each of A and B per gallon of water you add You probably boost your chances by sticking to metric here as they're calling for a dilution of roughly a thousand to one, and that's hard to do with imperial. Also, invest in a pipette because eyeballing 9ml is a challenge for the best of us.
D**N
Great value
Exactly what I ordered! So glad for it.
M**.
Excellent buy.....
Excellent product. Used now for a little over 3 weeks, Shipper made mistake that I did not catch, but spouse did. They sent 2 bottles of "A" instead of one each. Honestly was impressed with just the "A" part. Been using the mix of "AB" for about 2 weeks and "*%&<÷>=/&". Plants using about 1 gallons every other day. Mixed as recommended, will last a long time at the rate of use. 6 teaspoons per oz. 32 oz per bottle (192) feedings..... I recommend this product. HUMBOLTS! NICE. Thanks
D**E
Easy for a beginner!
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!
J**N
Wants you to buy additional products.
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.
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