Grodan Rockwool Starter Mini-Blocks | 1.5" Blocks - Pack of 45 | + Twin Canaries Chart

Used these to start my kale lettuce seeds. They come with a tiny hole in the center to simply drop the seeds in, i used a toothpick to press them down snugly. The pods fit perfectly into the seedling starter tray. They are firm, but have enough flex for a nice snug fit. Planted 2 seeds in each pod, wet them down with my aquarium fish tank water and set under an inexpensive grow light. Pics are the results 1 week later. Rockwool is the best. No dirt, no mess, and almost instant seedlings. Little pricey compared to soil but worth every penny IMO.

Normally I use alternatives to rock wool but since I’m experimenting with hydro peppers this year I figured I’d give these a try.Benefits: hold moisture, roots have no issue growing through these, they fit nicely in my 3inch net pots and they do not fall apart like other brands.Would recommend

Does the job.

It works. However, algae also loves this item

Great product that does exactly what it supposed too

So far so good. Plants are cloning well and the blocks are clean.

Very simple yet effective, allows roots to poke thru and do their thing

I love these things! They’re very handy for germination and are a must for hydro. The blocks are holding up well.