Picked up a small shipment of new plug sheets and webbed trays at the post office. I really stretch ’em out, have some going for years—they’re reusable, but not incredibly tough, especially when you take them into the field for transplanting. Handle with care and all that, and replace as needed! These are 72-cell sheets, my basic standby. Bigger is generally better here (my other standby is 38-cells), but there’s only so much room under the lights: if you keep the timing tight, don’t leave things in there too long, they’re fine for just about any small seed. Waste no space!