Hydrostone Terracotta Humidifying Stone (3 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.

My dealer told me about hydrostones. He told me they could revive dead flower. I was skeptical until I got them. OMG, it turned my crumbly flower you could crush to dust between your fingers into nice, fluffy, high quality flower again. I'm just mad I never knew about these before. If you smoke flower, you NEED to own one of these guys. I promise you won't regret the purchase.Just follow the instructions, and don't leave it in permanently. A few hours, overnight at most. Don't let your stash grow mildew. Just revive your dying stash.

Keep your product from drying out too fast.

They are not like the old aluminum pouch buttons that I am familiar with. When you drop one of those in water bubbles come out. These don't bubble. I soaked a couple of these in fresh, cold water for 3-5 minutes, and then dropped them into a jar of tobacco that was not quite bone dry, and left them for three days. There didn't seem to be any appreciable difference in the moisture of the tobacco. I must experiment more with drier tobacco to really make a judgement.

nicely made fired clay- hold moisture as exected

Very cute even down to packaging, perfect size for brown sugar jar also will try in my bread bin. They are small approx 1” diameter.

These work really well in both pipe and rolling tobacco.

Just ok