Grodan A-OK 1.5" Rockwool Starter Plugs – 2 Half Sheets of 49 (Total 98 Plugs) – Made in The Netherlands – Includes Twin Canaries Chart

Super easy to use. Break off one square, soak with water, stick a seed in the hole and pop it into my hydroponic system.

Thank you for a great product that works well for my little seedlings! I got these last year's growing season and they held up very well, from seedling to plant--I got several harvests from my Tower Garden. ;-)

Great rockwool as far as I’m concerned. Nothing to complain about. They are a bit soft and can fall apart easily, but I’m fine with that. There’s a balance I prefer between those super dense and hard rockwool plugs and ones that are thin and come apart easily. I’d say these ride that line in between pretty well. I don’t like my plugs to be too hard because I feel it inhibits root growth somewhat. Would order again.

My seeds grew well inside. They germinated well in these plugs. It may deserve a 5. I did not because every single plug died once I moved them outside. Most likely it is the user at fault but, not sure why. I transplanted exactly as instructed by the seed company.

I had never used rockwool before, but it was the material used by my hydroponic garden system the Gardyn. This is the size that fits the cups. The edging where the cubes tear are a little wider than the cup, but I fit it in when its wet, then add my seed and moisten. It has a hole in the center, so you won't need an awl either. Good price, good value. Just what I was looking for.

What I leaned after receiving this is that you can actually cut it into quarters (or smaller if you’d like lol) and use it in the hydroponic grow baskets which would essentially quadruple or more your grow media. Other than that, works perfectly in my beginner hydroponics system! Just make sure to prep them first by washing them and reducing the ph first of course

I wanted to try an alternative to dirt for seeds that was hassle free after setup. These fiberglass cube do great at wicking water and staying moist. The issue is you would need to add mineral/nutrients to the water for results. I planted seeds in the fiberglass and in potting soil as a side by side comparison. They both sprouted at the same time, but after 2.5 months the fiberglass group still looks tiny. See photos for comparison. Both groups were treated the same, after dropping the seeds I gave them the same water, source light and temp. One group in a starter soil.. the other in fiberglass only. The seeds are creeping thyme. I'm sure the results could be different had I supplemented the water but I wanted hassle free plants. I setup a cycle of humidity, then air flow and light. I only replenished the water reservoir.

Started seeds in these and they sprouted in like 4-5 days. Super impressive and fit perfectly in my 2” net pots. Will buy again! Plants are beautiful

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