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how to start marijuana seeds in rock wool

Grodan Rockwool Cubes vs Rapid Rooter Plugs: What is best for Cannabis Seedlings?

Rockwool Cubes vs Rapid Rooter Plugs

What’s up Cannabis Growers and welcome back to GreenBox Grown! So lately I’ve been getting hit up by a lot of you guys, asking me what is the best way to start off your cannabis seeds after germination. And of course I always recommend either the Grodan Rockwool Cubes or the Rapid Rooter Plugs.

So in this video I’m going to compare and contrast them both to show you guys the pros and cons of them, and then I’m going to give you guys my opinion on which I like to grow with best. As always I’d like to remind you guys to check out the link Down Below in the description to visit our Patreon page, where you can sign up for 1-on-1 Grow Guidance with myself. Alright now let’s get start with the video!

Alright guys, here we are at my current grow which is some Autoflower seedlings about four of them, and they are growing in the Rockwool Cubes by Grodan. I’ve actually already transplanted them into Solo cups with soil so you can’t see them as they are completely covered up at the moment. Now I want to give you guys my quick list of pros and cons for both the rockwool cubes and the Rapid Rooter Plugs.

So the rockwool cube is going to be pHd at 5.5. So it’s kind of better for Hydroponics while the Rapid Rooter is a little higher at 5.8. They are still both great for both soil as well as hydro, and I would say the Grodan is better for hydro than the Rapid Rooter. But they do both work.

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The rapid Rooter since you can see it’s round and kind of has a shallower, skinnier base, it does fall over more easily unless you have one of those crates in your grow tray. The cubes don’t have that issue. Another big one is the rockwool cubes for myself I’ve noticed in my opinion, it’s a lot harder for these to start growing algae on them then for Rapid Rooters. This will start growing a lot faster. And again since the rapid Rooter is so small,well not so small just comparatively smaller and doesn’t have as much area for the roots to grow in in terms of width. So it’s only going to be in here, the seed is only going to be in here for a couple days, before you transplant. While this seedling can be in here for a lot longer and can grow a lot more in terms of root zone growth, before needing to be put in a larger grow space.

For those reasons I would say the Rockwool Cube is definitely my favorite, and it is a little more beginner-friendly than the Rapid Rooter. Not that the Rapid Rooter isn’t worth using, just prefer the rockwool cubes. And again you can use both for cloning but I prefer the rockwool because it’s not going to fall over and it gives a bigger space for the Clone to grow out its roots in. Where with the rapid rooters, you’re not going to have too much space to grow them in.

Alright folks, that concludes this comparison video of both the Rockwool Cubes by Grodan as well as the Rapid Rooter Plugs. If you guys enjoyed the video please give it a thumbs up and feel free to comment below with your feedback. Also feel free to subscribe to the GreenBox Grown channel and to turn on those notification so you get updates on my latest grows. As always thank you guys for watching and until next time…

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