Q about air ex.[humidistat]
Posted 06 June 2005 - 10:12 AM
Posted 06 June 2005 - 10:19 AM
Pasteurize the casing material. The oven is a poor choice for pasteurization, but if you use it, be sure as said the vermiculite is moist, and insert a meat thermometer into the verm. Start a timer when the material reaches 160F, and let it remain there for one hour. Adjust the temp of the oven so the vermiculite maintains 160F. I would recommend mixing the verm 50/50 with peat. Performance is better and it's much easier to read the moisture content by color with peat added.
Posted 06 June 2005 - 10:26 AM
Posted 06 June 2005 - 10:42 AM
Posted 06 June 2005 - 07:42 PM
Posted 06 June 2005 - 08:33 PM
The thing to remember when doing sterile work, be EXTREMELY sterile. Once your grains are inoculated and safely tucked away inside filter disk protected jars your sterile work is finished.
Trich and cobweb are your enemies in the fruiting chamber. Neither will grow in an environment with fresh air that circulates. Both want still, stale air with a high CO2 level. Provide the air exchange your fan will give, and you'll never see green. What you will see is dry casings and cracked caps on your mushrooms if you can't also provide enough moisture in that rapidly exchanging air. That is your challenge. Provide enough air exchange to ward off the trich, while providing enough moisture to prevent drying out. If a 6 x 6 opening is all you have, that's probably not enough. My mini-greenhouse extends from the floor to the ceiling, and the door is simply a piece of plastic sheeting that covers the entire front of the darn thing with no attachment except at the top. On the bottom is a piece of PVC pipe that holds the plastic in place by gravity. The entire 8' of both sides is unsealed for air exchange. There is two 6" x 6" holes cut for cameras to shoot time lapse videos through so air exchange is not an issue. I use two cool mist humidifiers located inside the greenhouse for humidity. Both are connected to a humidistat that is set for 80%. They cycle on and off to maintain that humidity level. I have no fan to provide fresh air. The horribly loose fitting door and the camera holes provide enough. I'm only 50 miles directly downwind from a very large rain forest that is the birthplace of most of the trichoderma in north america.(that's an exaggeration, but it makes my point)
To repeat: Air exchange is the key to your growing environment. Sterility is the key to your inoculation procedures. Don't confuse the two. I hope this has helped.
Posted 06 June 2005 - 10:13 PM
Posted 07 June 2005 - 12:47 PM
Posted 07 June 2005 - 07:56 PM
Run the ultrasonic and monitor how much humidity you are getting. Put the ultrasonic on a timer and adjust accordingly.
Cased trays only need about 70% RH if I remember correctly.
Posted 08 June 2005 - 04:25 PM
Posted 08 June 2005 - 09:52 PM
I don't think you'll need the fan but if you want you can run the fan once or twice to blow the whole thing out but you'll also be reducing your humidity at the same time.
Posted 09 June 2005 - 09:43 AM
Posted 10 June 2005 - 11:58 AM