Hay David, what are your temperatures? The small varieties of tomatoes have an easier time setting blooms and fruit even as it gets too warm for most other larger tomatoes it might not be nutrients giving you trouble.
Yeah, I just start them in rockwool cubes in a tray then transplant into rafts when they have popped up. Works great, you just want to make sure you dont leave them in the master slab too long because as the plants get bigger, roots will want to grow into the adjacent cubes and when you pull them apart, you will break roots which slows growth for a few days.
one leg of a pair of nylons--i squeeze the peat once a day to get it to release a little faster. You can use vinegar with molasses about 2 tbsp each add daily until it drops to 7.0 Radical change will kill fish and plants.
I am heating my water (and air) with an outdoor wood boiler. There are 2 separate loops, one for the air and one for the water. Each fish tank is a separate zone in the loop and has a coil heat exchanger, zone valve, and thermostat with a temp. probe. pretty simple system. Only problem is everyone stopped carrying the coil heat exchangers and i need to replace a couple. i will probably be converting to a shell and tube heat exchanger over the summer. $1,200 - 1,500 initial investment but it will be more efficient with less plumbing and zone valves. I have 2 10,000 gallon systems. One i heat the water for tilapia and the other has hybrid striped bass and they stay consistant with the air temp..
The modine is backup heat in case the main boiler fails. My greenhouse wasn't at all designed for what I'm doing, so I've had to improvise. I have put up a blueboard skirt around my tans that leans out to the solid wall. There are radiators along his solid wall so the heat from the radiators gets trapped around my tanks and heats my water. . . Ideally I'd have more control, but it really ended up working quite well. I 've managed to squish quite a bit of production into a really small space, and I still have a lot of room to expand if I have to. . .And I'll have to if my business plant isn't a bunch of hooey. : )
I've driven through your area, I think you'll have a great experience once your greenhouse is cranking. What'll be your square footage? It's looking really good! I wish I could do in ground stuff here. maybe someday. Well, keep up the good work.
David, you're greenhouse looks like it will be awesome. I'm excited to see how it progresses. Where are you located? I'm high desert too (Laramie, Wyoming). It can be a challenge to keep a greenhouse going when it's -35F and 50mph winds. . .
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