When will you have some 7mm 200 hole top (seed) plate.
We do not carry 7mm top seed plates. We only carry 7mm bottom plates.
Is their seeder compatible with Rockwool plug sheet 1”x1” 10x20 sheet - 200 holes per sheet - on “ centers
The seeder was specificially designed to fit our cell trays and we haven't tested it with Rockwool plug sheets. It would be nice if it would work however I think it would be pretty hard to match-up. The drop may be a bit too far for it to be feasible causing the seeds to bounce out.
What size seed plate for non pelletizes lettuce seed?
It will need to be pelleted in order for it to be the proper shape to work well with the drop seeder.
How do you prevent multiple seeds from filling one hole?
What size hole for the drop seeder would we need for pelleted lettuce?
For most pelleted seeds (including lettuce) we believe 4.5mm will work the best.