Hi...Well I think I have found where I was getting the info on re Cold Treatment ....It is on
http://www.tomatoville.com/showthread.php?t=13171
I must read it all properly..
I Now find My growth chamber cannot get down to 10 degrees with its lid down and the lights on.......The lid of course is not air tight and warm air will be drawn in from outside.... when the lights are all switched off (and I am presuming here) it will possibly work as I had hoped it would.. ....At present its showing 13.5 degrees and is slowly rising so I can only presume that the cooling system cannot handle the extra temperature being created by the LED tubes....I have sought advice from my electrician....??
Anyway will it do any harm to have my seedlings under lights for 16 hours a day for 10 days...at a temperature of 13-14 degrees and when the lights are switched off will it matter if the temperature then drops as I suspect it might to 10.5 degrees ....This temp can be changed simply by resetting the thermostat...Thanks Ron