54 site empty tray: Ideal for 1” Rockwool blocks
Can be filled with your own choice of seed or cutting medium – perlite, seed compost like Canna Seedmix or Bio Bizz Light-Mix, Seramis, shredded Rockwool, etc. 84 site empty tray: Ideal for use with medium Jiffy blocks. Shallow but with large drainage holes. If kept above the drained water along with plenty of air-circulation will encourage air-pruning of roots to give more root-branching and efficient use of the medium.