I am looking to streamline my seedling operation, mostly for vegetable growing. At this point I start about 700 seedlings a year. With a small greenhouse I would transfer all the operations outside the house. I see that Johnny is offering a 5X8 thing at $295. Any advice is appreciated, including temperature management, invasion by critters or diseases, durability, light requirements, etc. I am thinking of placing the GH in a spot that receives sunlight until 1pm when the leaves are out. I can place a 55 gallon drum of water in the GH as thermal ballast.
i would also like to switch from peat pots/jiffy/seedling trays and go the soil block route. I lose too many plant to transplant shock, and also the trays deteriorate after a while. I see that there are many blockers on the market. I think I want the 2X2 inches basic block, just the right size for some of the large greens transplants ( due to many cabbage moths I prefer my transplants to be big, so they can fend for themselves), but there are ways to have also 1X1 inch heads. I think I can make my own soil by mixing my sandy soil with wood ash and compost (plus sterilization by boiling). Again advice appreciated as to the best model for me, multiple heads, efficient operations, anything else I need to know.