Seedling ebb

It's possible to use only germinating trays as growing system... all you need is a pump + hoses and dividers and some container... Basically it's possible fit two more germinating trays under one 120cm lamp! One germinating tray can hold up to 80 rockwool cubes, so theoretically it's possible to grow 320 small seedlings for a little while under one 120cm lamp. You might get busy moving the seedligns as they grow very quickly in this system! :)