We use the PH UP and PH DOWN in our hydroponic farm growing lettuce , some grow to close to 3lb a head . Thank you for you products.
Customer Reviews
Overall rating: 4.7 / 5 from 4672 reviews.
This is my second season using Humboldts secret. What amazing result from seed to harvest nothing else compared!
TREE TRUNK SUPPLEMENT is one that is a MUST for growing any type of vegetation. It is the very last supplement I mix into my watering routine and it takes very, very little to secure that your plants survive any type of stress during growing. That could even mean if the plants need watering before their scheduled day, it will help them to "plump right back" to to stress of any kind! I have been using rainwater to water my plants for this entire growing and flowering season! And the results are absolutely AMAZING! Largest flowers ever and so plump and juicy too! Using Humboldt Supplies and rainwater is certainly going to give me a "Banner Growing Season!" Thanks Much guys! Been using your products for nearly 10 years and the $$$ saved in growing your own crops is simply AMAZING and worth every bit of effort!
I have been using Humboldt products for nearly 10 years. Golden Tree is "The Bees Knees" when it comes to nutrients! And this current grow I have been using NOTHING but rainwater for my plants. Absolutely establishes huge rewards in the bounty of my plants! Flowers become super charged and twice as bulky! Rainwater is really the best water to use! Love Humboldt Supplies! Simply THE BEST!
I've used it for 4 years now and have had excellent results
I love it thank you for putting a new and improved lid so it doesn't leak and go bad
I just started using these and I swear I’ve never had plants this good! I’ve a while to go, but it’s great and not difficult.
Awesome 😎
this stuff works and works fast
This is my second season running Humboldt secret nutrients and I absolutely love the whole line of products. I'm running it with a super soil this year with amazing results so far. I would highly recommend Humboldt secret nutrients to any grower of any skill level.
Fast delivery
I haven’t had any problems with your nutrients 😎
Great
Great thank you
Ordered the A&B qts they should be enough to get me through the other components from the starter kit
Working great!
Working very well!
I have tried this several times Each time I wait to see the results It seems to work better at higher doses based on the most recent results tY
LOVE THIS STUFF
I have been using HSS for 6 years now and I love ❤️ the results I achieve with HSS.
Have not used the product yet garden just now starting to grow in my region ty
Exactly what I needed and shipped quickly
I am new to growing , my plants look good and healthy. Humboldt was recommended to me and I am satisfied.
Product works very well my plants are beautiful.
Some of my thin patches are finally starting to blend in better.
I liked that one product worked for several plant types.
I just like the way it works IN my SIP system. WhY settle for 2 essentials when you need three!
I used it on my office plants and they look less sad now.
Great for a quick weekend lawn project.
I would buy it again.
Best supplements for my flower!
Product is great
I started seeing results after a few weeks.
The plants looked less pale after consistent use.
a 1
I used it on edible plants as directed and they looked healthy.
The ladies loved it! It boosted them about a week ahead of schedule. Thickened up those buds tremendously! Great product! Awesome company!
I liked the color response from the iron.
It did not have a bad smell.
I used it before having people over and the yard looked much better.