RickCorey said:This is not a cheap solution unless you have 100s of trays or plan to invest for years of seed starting:
plastic food film ("Saran Wrap") comes in 18" and even 24" widths from food supply stores. One roll will cover thousands or maybe millions of trays.
Or you can laboriously tape pieces of 12" food film together to get a sufficiently humidity-tight cover.
Rick,
You jumped my tip from "el cheapo" to "el dinero!!!" Everything I do is on a seriously limited budget, and, I'm not promoting spending $$$$ here. I've got closets full of old cleaner bags. And, I don't even use the dry cleaners much anymore, either. Those bags in the pic are HOSPITAL gown bags from my annual mammograms! I raid the disposal bin once a year, when I go for my annual. The bags hold the clients personal belongings for approximately 30 minutes, and then they are put into a disposal bin.
And, even if I didn't get those bags, I'd get FREE dry cleaner bags from my friends and neighbors who use dry cleaners...
Just keepin' it real!
Linda