Grodan Rockwool 1.5" x 1.5" x 1.5" Mini Blocks Pack of 45

I grow hydroponically and use this to start my seeds. It is just as described. Overall it works well for our needs

great for new seedlings in my Lettuce Grow

Probably my 4th year of running all sorts of plant in an aeroponic indoor planter. In the past i have used all sort of different media and always had issues; expanded clay pellets the roots would take too long to grip right and plants would fall over, coco medium and other organic media always came with fungus issues, etc. This year i have no issues and the plants seem much happier and healthier than in previous years. Would highly recommend. Also in my case i ended up tearing up the little cubes and simply adding the material around the roots. Be sure to wear a mask and gloves when you do this to not breath or get the fibers in your skin as can get itchy.

Coincidently, I just finished a trial run of your rockwool product just now and can not tell you just yet how satisfied I am because this is the first time I am using this product. It did come recommended from a book that I read to learn how to clone your plants. I will be more than happy to give you another review in about a week when I should have results from my trial run.

Works

I am a master horticulturalist. I have used starter cubes for 20 years now easy. They are awesome. Depending on the plant species, Ive had hemp clones root and blast out of the bottom of the block usually in 5-7 days. My record is 24 hrs from clone cut to coming out of domes. The seller is great. Ive bought several times from them and will continue too.

These are really well made rockwool cubes. I know that sounds weird, because rockwool is rockwool. Will it help my plants grow any better compared to other rockwool, probably not. But they are very clean, perfectly cut, and very easy to work with. There is no mess, because they are already separated. This is now my go to brand for these.Note these are not tapered. They are great for all my needs except in my NFT trays. This is because the tapered ones fit better in the holes.

I used these for an aeroponic set up we have at home to grow various lettuce, chard, kale, basil, etc. The packaging was pretty great and it kept the cubes pretty clear of any pollutants.Now with the seeds we planted, not all sprouted but this could be on our end. The cubes were a perfect fit for our aeroponic set up. We have also purchased smaller rockwool cubes from the same company and almost none of the seeds we planted in those ever had anything germinate. I have 10 set up with seeds right now. Only 3 have sprouted anything in the last month. The chard and Russian kale sprouted but none of the other seeds. Hope they come along at some point.