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💧 Keep it fresh, keep it real — hydration that speaks your vibe.
The Hydrostone Terracotta Humidifying Stone (3 Pack) by RAW is a natural, reusable terracotta stone designed to maintain optimal moisture levels in tobacco and cannabis flower. Compact and odorless, it prevents dryness and preserves freshness without adding unwanted scents. Trusted by thousands with a 4.6-star rating, this eco-friendly humidistat is a cost-effective essential for any connoisseur’s collection.












| ASIN | B00HFZE6G2 |
| Best Sellers Rank | #35,282 in Health & Household ( See Top 100 in Health & Household ) #27 in Tobacco Pipes & Accessories |
| Brand | RAW |
| Brand Name | RAW |
| Color | Terracotta |
| Control Method | Touch |
| Customer Reviews | 4.6 out of 5 stars 7,141 Reviews |
| Filter Type | Carbon |
| Included Components | Hydrostone Terracotta Stone |
| Item Dimensions D x W x H | 1.5"D x 1.5"W x 1.5"H |
| Item Shape | Irregular Shape |
| Manufacturer | RAW |
| Material | Terracotta |
| Model Name | Hydro Stone |
| Model Number | Hydro Stone RAW |
| Number of Packs | 3 |
| Operation Mode | Manual |
| Other Special Features of the Product | Humidistat |
| Part Number | RAWHYDROSTONE |
| Power Source | Corded Electric |
| Product Dimensions | 1.5"D x 1.5"W x 1.5"H |
| Room Type | Bedroom, Living Room, Office |
| Runtime | 5 minutes |
| Special Feature | Humidistat |
| UPC | 710861448971 |
| Unit Count | 3 Count |
Y**Y
Better than expected, highly recommend!
I bought thesebdk to help hydrate my Medical Cannabis flower after using various products but these terracotta moisture stones are hands down the absolute best at rehydrating dry flower and not adding any bad odor. I used to add a piece of salad leaf, cabbage, bread, orange 🍊 peel, and it did the job but also made the bud smell and taste like orange/bread/cabbage. Then there's this company called Evergreen that makes moisture pods which work great but after a few uses it starts to smell bad and makes the bud smell and taste the same. Finally, I saw someone using these terracotta moisture stones and decided to try them and I'm glad I did because they are 100% the Best! Just be careful and don't leave the stones in for longer than a couple of hours because if you don't check after a couple of hours, it's very likely the moisture will get away too high and mold will start to grow and ruin the precious flower/bud. They're very easy to use. They're natural stones. Super cost-effective and reliable. HIGHLY RECOMMEND!
D**A
Why didn't buy this soon!
For a few bucks, it’s one of those “why didn’t I buy this sooner” accessories. 100% would recommend it to friends. It’s not fancy, but it does exactly what it says: keeps your "tobacco" from turning to crumbs.
M**R
Works Great!
Works Like a Charm!!!!! Rehydrated my product and keeps it fresh as advertised.
A**N
Very useful terracotta stones.
nice terracotta stones. Small but useful. Yes they work.
A**N
Work 100%
They work excellent they do the job
T**R
They work! Hard brown sugar as soft as a cloud.
The disks are mini sized, but they really work! I added all three to a container of rock hard brown sugar. The sugar is super soft now. Highly recommended!
S**R
Works well but not like a moisture pack
I was skeptical at first but after reading many positive reviews I had to check them out. I can attest they are effective, but they don't work the same as a Boveda or a similar 2-way moisture pack. I use them for cannabis I grow and cure that has dried too much. Like others have mentioned they work very quickly, meaning the water that's in the stone will evaporate quickly. This means if you put it in a closed jar with some dried out plant material, you will indeed see the RH % in the jar shoot up fast, but the moisture doesn't absorb fully into the plant material for some time. So, if you remove the stone quickly from a jar with, say, 1 oz of dried out plant material, the RH will drop again pretty quickly as the small amount of water vapor is absorbed, and you're back where you started. The upshot is, if you have a moderate amount of buds or plant material to rehydrate, you shouldn't just pop a fully wet stone in a jar and leave it like you would with a Boveda, because the water evaporates into the air quickly and may not fully absorb for a while, and the RH may get into mold territory in the meantime. Rehydrating very dry plant material usually takes some patience, and I don't recommend more than a few drops at a time on the stone. Let the water fully soak into the stone (a few seconds), place it in the container and give it time to absorb into the buds before rewetting, keeping track of the RH with a meter. It definitely works, but it's a little more work than a moisture packet to get, say, an ounce of dried buds stabilized at 58% RH in the jar, but the nice part is these stones can be reused over and over, and they're very cheap. Highly recommended, especially if you're a grower and, like me, you don't like buying and later throwing away all those moisture packs.
S**Y
Smaller than expected but works not bad
Alot smaller than i expected but it seems to work. I feel like due to its size, I have to replenish it with wter more often for my bigger brown sugar canisters
B**E
Fonctionne parfaitement.
Utiliser pour des grandes boites de tabac à rouler, une pierre immergée pendant 3-4 minutes, puis essuyer afin d'enlever l'eau sur la surface. Placée au 2/3 de profondeur de la boite je peux enfin fumer mon tabac jusqu'à la fin. En plus il y a 3 pierres donc de quoi remplacer en cas de casse. Parfait!
A**N
Great Product
These are fantastic - really happy with them
M**N
Damaged Broken
i receive the products damaged in small pieces
J**T
Bon produit
Utile et efficace
Trustpilot
3 days ago
1 month ago