Bootstrap Farmer Humidity Dome 5" Tall Extra Strength, 2 Pack, Propagation Seed Cloning Lid Vented for 1020 Tray Seed Starting Germination

If you want a cover for your 1020 bottom tray this is the way to go. Most other seed trays/covers/seed starting trays are made to only last a year or maybe two if you are lucky because they are cheaply made with very thin and brittle materials. Not this cover. I can tell it will last a lifetime as long as something heavy isn’t dropped on it.

Very sturdy tops. Doubt I will have to ever replace these which makes them a great deal.

I used this as intended, to cover up seed starting flats, the size of 1/2 gross, or 72 cells. I had put plastic film over them to keep the humidity in, and found that some seeds had sprouted and come to a bad end. This plastic dome fit on the flats amazingly and saved the rest of the plants. Makes a tiny greenhouse, you can just pick it up. I put it outside in a sheltered place and the little plants seem happy. You can take it off if the weather is mild, and let them get some filtered sun. There's little ventilation adjusters on the top of the dome. A nice product, I'll be using them from now on, I guess.

These are far sturdier than regular plastic covers, but at $16 per dome, they are not THAT sturdy. If you step on one, you will ruin it. I might pay $7 or so, but at $16 for ONE dome? Too rich for my blood.

These clear top fit standard-sized 1020 nursery trays, but they are much sturdier, thicker, stiffer and longer lasting that any others we have seen or used. I was skeptical at first due to the cost of these lids, but they seem to be a bargain as they last much longer than the typical cheesy thin and rapid-cracking lids I usually find.I will buy these again

I use the humidity domes more for seed germination. Instead of buying a Burpee self watering 72 cell every spring for $25. I took a couple seasons to build a heavier duty system. 1.) The humidity dome: the material is good grade. It does seem to be manipulatable, but returned to shape after laying flat. The frosted/opaque look is a nice touch. The two top channels are that. You could set light strips on top. 2.) Heavy duty air prune flat: Probably around the same price as the hood. This is the part where Burpee systems usually only last a season. I found some with the open bottom(s) to wick water up a capillary mat. 3.) Bootstrap heavy duty tray: I haven't had an issue using them as water resevoirs with heat pads. I usually don't start over 2 flats at a time. Got the two pack to rotate different uses.

I'd heard that these domes were sturdy and thick, but I truly had no idea what that would look like. I've had dozens of the cheap domes over the years, and they work, but they flex out of shape and quickly break down. By way of contrast, though I haven't had these domes for long, I can tell that they will last a very long time. I would guess they're 2x-3x thicker than the standard cheapo domes and will support a tray of seedlings ON TOP of the dome (if you set them to rest on top for a minute). Never had a dome I could say that about before

These humidity domes are molded of very heavy weight translucent plastic with two adjustable vents. Unfortunately the centers of the long edges bow out by nearly half an inch so there is a gap between the edge of the dome and the Bootstrap Farmer 1020 heavy duty trays. Thus condensation runs down the inside of the dome and onto the floor rather than returning to the tray.