Here is a way to build your own heated greenhouse bench. For the last two years I have been using agritape heat mats, but they would trip the GFCI and my flats would be cold. The following heated bench is much cheaper than heat mats and will not trip the GFCI. I built this as a 4' x 8' bench but you could build it smaller or larger as needed, you will also need a thermostat controller--about $20 on ebay.
This is an older video, from last fall but I wanted to share it with anyone interested in putting up a high tunnel. The easiest way to put in the ground posts is to drive them in with a jack hammer. I rented one with a portable generator and drove two tunnels worth of posts in about a half day (thats 144 posts). These posts are long too 66" with 42" driven into the ground so that the structure is really well anchored. the one thing you might have to look around for or buy is the "tent cup" attachment to use with the jackhammer. Sorry about the not so great video quality. And yes I realize we should have had hard-hats, eye protections etc, dont tell OSHA.
My Organic inspection went well yesterday and I just got the call that I am now certfied Organic by PCO!!
My buddy Mike from Longview Farm came by to help me stick (farmer-y slang for planting vegetable seedlings) my tomatoes. We knocked out about 1000 plants in 5 hours with him doing most of the hard work (he is ten years younger after all). Looks like a owe him a couple cold ones
It took one week plus a day, but I finally finished building the high tunnels. All in all the project went smoothly, I couldn't be happier. Special thanks to the Seed Farm crew for helping me put the plastic on. Now its time to till, fertilize, lay plastic and plant! Goal is before EOM!
So the high tunnel kits that I purchased from Bieler's Greenhouse Structures were finally delivered today. Each tunnel is 26 feet wide by 252 feet long and is comprised of 36 bows. I checked out a lot of vendors and Bielers definitely had the best pricing. Originally I had planned on doing the entire build myself, but today I am really glad that I had hired Happy Construction to lay out the string lines for the buildings and drive the high tunnel legs. After helping them lay the string lines, I realized I probably would have had a really hard time getting buildings this large to be square, but they do it every day so it was no problem. They didn't use any fancy lasers or anything, just long tape measures, string, and the Pythagorean thereom. Also, Happy Construction used electric jackhammers with modified bits to drive the legs into ground--something I had never seen or heard of but a great idea. I was worried that the posts would not drive the full 42" depth, but it turned out to be no problem. Having seen this all done once, I think I could probably do it myself next time around.