The Hydroponic City 1.5" Rockwool Starter Plugs, 2 Sheets of 32 Plugs (64 Total) + 1 Stake, Green, Indoor, Tray, Rectangular, Unfinished, 1.5" x 1.5" x 1.5"

Used in conjunction with CloneX, and depending on environment humidity, temp, and husbandry; your clean healthy cuttings should easily have success rates near 90-95% or better.If you have a handle on what your doing you shouldn't have any problems with these cubes.The only negative i can say is that; for my application, i would like a little bit larger sizes cubes. Just watch you cuttings close because they'll shoot a lot of roots pretty quickly and can get root bound beyond correction or stunt growth indefinitely.

This is the worst cubes I have ever bought. When separating them they always break in the center of the cube. They don't hold water as long as other brands.

I tried these as an experiment with my Aerogarden and in pans under grow lights. The Aerogarden cubes were a success but the pans were a failure for the most part. I'll reuse them and try other ways to use them. They're holding up well and are very easy to use.

Very difficult to use. you have to soak it and fiddle around with the pH. Plants didn't sprout in it. I don't recommend this for sprouting seeds. Use the grow pods instead.

These rock wool cubes were very dense compared to others I have used. The density made it difficult to stick cuttings. I expect there was insufficient oxygen to the root zone of the cuttings as all were unsuccessful.

Ideal as starter for seeds! Just right size n thickness! Have used for starters last 3 years! Thanks!

I've had success so far with a number of sprouts but I've yet to see roots come out the other side. I think they could be thinner

Product material is okay but it doesn’t cut well and does not keep it’s form very well