Thanks a lot for all the info.
I already have my filter and fan connected by a rigid, rubber-lined collar so it works as one unit.
I am going to set them up inside the tent and run the ducting to the lamp reflector and then from the lamp reflector to the tent vent hole at the top.
I have considered setting the reflector on the diagonal across the tent from corner to corner rather than side to side so that the ends of the reflector where the ducting goes will have extra room to bend gently.
The oil radiator is a small and gentle thing and has a control dial so that you can set it higher or lower.
I already use it on colder nights when the temp is going down to 5C and lower in the unheated garage. It's on a timer so that it turns on about 15 minutes after the lights go out and turns off right before the lights go on.
I checked it the other night in the middle of its time and the tent was nice and toasty about 24C, so I may lower it a bit more to get the dark time temp around 15-20C. The daytime temp in the tent is between 25 and 30C just from the cfl lights.
Do you think that a cool tube is as good as a broader reflector housing for an hid lamp?
It seems to me that the smaller space for the light inside a cool tube would promote more heat issues than the bigger, wider reflector housings and also spread the light less efficiently since its reflector is just a thin piece of curved metal around the tube. But I have no experience with either type.
I already have my filter and fan connected by a rigid, rubber-lined collar so it works as one unit.
I am going to set them up inside the tent and run the ducting to the lamp reflector and then from the lamp reflector to the tent vent hole at the top.
I have considered setting the reflector on the diagonal across the tent from corner to corner rather than side to side so that the ends of the reflector where the ducting goes will have extra room to bend gently.
The oil radiator is a small and gentle thing and has a control dial so that you can set it higher or lower.
I already use it on colder nights when the temp is going down to 5C and lower in the unheated garage. It's on a timer so that it turns on about 15 minutes after the lights go out and turns off right before the lights go on.
I checked it the other night in the middle of its time and the tent was nice and toasty about 24C, so I may lower it a bit more to get the dark time temp around 15-20C. The daytime temp in the tent is between 25 and 30C just from the cfl lights.
Do you think that a cool tube is as good as a broader reflector housing for an hid lamp?
It seems to me that the smaller space for the light inside a cool tube would promote more heat issues than the bigger, wider reflector housings and also spread the light less efficiently since its reflector is just a thin piece of curved metal around the tube. But I have no experience with either type.