A note from BuildASoil

Over the last 13+ years, we've grown into a much better company — and a lot of that growth came directly from our critical reviews. Every 1, 2, or 3-star review on this page taught us something. New formulations, better packaging, improved shipping, clearer instructions, stronger customer support — almost all of it traces back to a customer who took the time to tell us what wasn't working.

If you haven't tried BuildASoil in a while — or you tried us early on and it didn't go great — we'd genuinely love another shot. We get better every year, and we have the receipts to prove it. See what's new at buildasoil.com →

Showing 126150 of 209 critical reviews

Joshua S.
★★★☆☆VerifiedJan 10, 2022
Nice Glasses but product arrived with A scratch in the lense.
on Culitvator FX - Full Spectrum Grow Glasses (LED, CMH, SUN)
Doug C.
★★★☆☆VerifiedJan 1, 2022
Overall the unit works well, however, it would be nice if it could be controlled by the Niwa. If manual control is your thing, then this unit is great. If you want to automate as much as possible, this would not be the unit for you.
on BuildASoil Humidifier
Mo
★★★☆☆VerifiedDec 21, 2021
The Niwa is a really cool tool but the software on iOS is a very buggy experience. It needs some fixes and updates for me to trust it without checking it daily
on Niwa Grow Hub+
Reply from BuildASoil
There have been some huge improvements to the software recently.
Cassidy
★★★☆☆Nov 25, 2021
Didnt like the interface and found it to feel outdated, seeing as most grow room equipment I have has sensors built in the niwas sensor didnt add much other than another reading, id really only use it to control lighting
on Niwa Grow Hub+
Ry B.
★★★☆☆VerifiedNov 24, 2021
Amazing light for veg and flower, plants love it. Unfortunately it’s super hot in the middle so I switched to LED to save my canopy in flower. For use in a warehouse or more commercial space this would be excellent.
on Iluminar Double Ended 630W CMH Light Fixture w/ Lamp
Closet_Pharm M.
★★★☆☆VerifiedNov 15, 2021
My product has the consistency of axel grease which makes it a little harder to work with but the results speak for themselves. Worked great for a plant that needed an extra boost to get it through flowering.
on Eden BlueGold - Fusion Flower
Jay T.
★★★☆☆VerifiedOct 28, 2021
It was a little green by the time I got it but I was still able to suffice
on Blue Oyster Mushroom Straw Log (Living Mulch)
Jonna V.
★★★☆☆VerifiedAug 12, 2021
Plugged them in, air dispersement is fab, size is great, but after about 30 seconds, the tautness on the interior cord squeals like crazy every time it turns to the right. Bought 2 fans, both did the same. :(
on Clip Fan
Santiago D.
★★★☆☆VerifiedJul 20, 2021
A few pin holes but nothing too bad. Overall good quality. I would by again.
on Gorilla Lite Line Grow Tents
I'man F.
★★★☆☆VerifiedJun 6, 2021
Seal on the bottle was broken and leaked inside the package. In spite of, the extra effort that was (obviously) taken to prevent this. Unfortunate
on Rootwise Bio-Catalyst Enzyme Elixer
Sam K.
★★★☆☆VerifiedApr 3, 2021
Good pots.. so much better than regular fabric pots. But they have no handles for moving them
on Grassroots Living Soil Pots
J. M.
★★★☆☆VerifiedFeb 25, 2021
This definitely works, but it isn't as concentrated as the Tweetmint. You need to use 4oz of Dr.Zymes and only 1 oz of Tweetmint per gallon. For 35 bucks you get 16 oz of Tweetmnt and 32 oz of Zymes. With that you can make 16 gallons of Tweetmint and 8 of Zymes. I didn't realize this when I decided to try it out. So in essence, you are paying twice as much for Dr.Zymes. I have used Tweetmint for years before this came out and have killed all kinds of insects, from aphids to spidermites it has not failed me. Plants are happy and healthy and I spray weekly. Plus it saved a buddie's grow from PM. I also use it in spray bottles to clean and sanitize the grow room and my house in general. Either way, these enzyme based products are much better than the toxins we used to have to spray!
on The Amazing Doctor Zymes Eliminator Insecticide And Fungicide
Adam
★★★☆☆VerifiedFeb 18, 2021
Thought my plants could possibly use some silica since it always seems like people enjoy the results they get adding it, but I found in my personal soil it had no benefit and just burned the plants a tiny bit (obviously this misusage was 100% my fault but if your soil is loaded you probably don't need it)
on Agsil16H Potassium Silicate
Wardis V.
★★★☆☆VerifiedJan 23, 2021
This is for the 1 gallon pot, purchased to see how roots do in a moisture lock liner bag. The overall quality of the pot is excellent, I mean like an order of magnitude grater than say.. the Root Pouch or Grow Pro essential fabric pot. However, the only weakness, is that the threads at the ends are just left dangling at the end, to eventually start coming undone. I would still purchase or recommended it with the expectation that there would be some minor stitch work involved by the end user.
on Grassroots Living Soil Pots
Hannah
★★★☆☆VerifiedDec 22, 2020
I am a first time grower so I did not think 5 gallon pots would vary in size. However, these are 1.5" shorter than the other 5 gallon fabric pots sold on the same site. I find this bizarre and somewhat disingenuous. I did not think to compare the dimensions of 2 different "5 gallon" pots until after I got them and my boyfriend, who is not new at growing, said they were quite small for 5 gallons. I do a lot of purchasing for my research lab at a university and any bucket that is called 5 L (gallons aren't in science land) is the exact same dimensions as another 5 L bucket. This makes no sense to me, and I think it would be helpful to clarify that not all 5 gallon pots are the same size and to check the dimensions and compare those dimensions to others. Pots are nice, though. I've spent about $300 on this site in the past month and other than this weird size stuff, I also tried to review these pots on Sunday (for 4 stars), which was not published. I find this even more disingenuous.
on Grassroots Living Soil Pots
BlackTooth G.
★★★☆☆VerifiedDec 14, 2020
Although this book has some helpful info, its only 9 pages long. I would probably consider calling this a pamphlet as opposed to a book. I only gave 3 stars because I'm really not convinced that its worth the price.
on Grape Grows: Gardening With Undisturbed Living Soil
Ellee27
★★★☆☆VerifiedNov 22, 2020
Setup and attaching to the tent pole was very easy and has a very secure grip. Unfortunately, the Low setting will not stay on; it only works on High, whether or not it's oscillating. The fan is loud on both settings.
on Clip Fan
Brower R.
★★★☆☆VerifiedSep 20, 2020
I don’t think this will help much for the intended use of adding aeration to a mix. The particles are way too small and fine, I have a feeling they just made my soil even more dense. I’m sure they add some valuable trace minerals and silica, though.
on Small Black Lava Rock
Robert Tristram S.
★★★☆☆VerifiedSep 10, 2020
It's a good product at a fair price
on Grassroots Living Soil Pots
Saul G.
★★★☆☆VerifiedJul 5, 2020
I ordered the shorty but was sent the 3 x 3 x 6 11 instead. Makes it difficult to setup from a wheelchair. Customer service offered me a quick refund but unfortunately i couldnt wait for gorilla grow to ship them more inventory. They also told me they would make it up to me as the mistake was not on my end. I ended up keeping it. Great product just not the right size was shipped to me.
on Gorilla Shorty Grow Tents
jacob d.
★★★☆☆VerifiedMay 16, 2020
Just got oly mtn nice clean compost although I found large pieces of whole sticks that took up a lot of room in a small bag but good stuff
on Oly Mountain Fish Compost
Andrew P.
★★★☆☆VerifiedApr 28, 2020
I was a little surprised when I opened the package to find it smelled like feet. Didn't think much as I opened the bottle and it smelled more like a typical ferment. However once diluting at the ratio and applying as a foliar. I was assaulted by the smell of stinky feet x5. It saturated Into the room and it has yet to fully subside after 5 days. I'm not sure if my batch was bad, because I know kombucha can smell like feet if brewed with mash instead of blended. However I probably won't be using this anymore for any indoor. If anything it'll be a greenhouse regimen. 😅 3 stars for the plants response. -2 stars for the feet smell that won't go away 😅 I'm recommending it because I love every product I try that you guys carry. And I'm hoping this batch was a unique one.
on Kombucha Plant Wash
John B.
★★★☆☆VerifiedNov 21, 2019
I like the results but not the price. Also the 2 not (potassium) is not wanted in my applications. W. Colorado soils are very high in Potassium already and at a cost of just under $200.00 for 40 pounds it is to costly for my rangeland applications. The 2/20/2 has very good energy and for other small plot applications it is GREAT.
on Active 2-20-2
Daniel T.
★★★☆☆VerifiedOct 17, 2019
Neem just hasn’t been doing it lately. Bugs these days, I’m i right? Sheesh.
on Neem Oil - Wild Harvest From India
Daniel T.
★★★☆☆VerifiedOct 17, 2019
Used this three times as part of BAS IPM. Mixed with agsil 16 and BAS neem. Didn’t see great results albeit I’m battling a wicked infestation. Maybe this combo just isn’t lethal enough. Either way, $50 bottle broke when it slipped out of my hand. Latex glove + oily glass bottle equals money down the drain and a house that smelled very fragrant for a few days. 3 stars because I couldn’t continue to use it but wasn’t impressed by that point.
on Essential Oil Blend