Stainless steal reflects good.Expensive<Yes..... And doesnt get rid of heat well. Either does sheet metal. Thinner the better. I see alot of Metal looking reflective stuff people have in their rooms. Not sure what that material is. Doesnt look like milar.

I am looking to heat a room, about 10'x10' with two seperate rooms built inside each about 3'x4'. both rooms are fairly sealed off and have thin walls. I am leaning towards a propane heater (added beni's of o2) but I need one with a temp gage and connec ts to 20-30 lbs tanks, or a better solution.

got and good ideas? what kind of heater? where? cheap?

thanks for any help

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I like tomatoes, all of my posts are about growing, harvesting and drying tomatoes.
Toe-may-toes are good for you.

Hi please help me! Im setting up my first grow and spent weeks researching and im happy with everything ive planned except my ventalation needs. Im growing in a 18 square foot space with a 600w hps (wont be using the full space yet, just starting with 5 plants) and i cant work out how much airflow i need and wether i should invest in a cooltube or vented hood because i am on a tight budget and money saved here can be spent elsewere!

cerberous............ Im in the same situation myself. When I figure that on eout I'll get back to you. Im drawing alot of outside air and with winter coming its getn pretty cold in there. I'll kit

KKMD................. For that size room you want the air to be removed from the room as fast as possible but not so much that your doors are slamming in the house.. Cheap is gonna be hard to do here because inline fans are expensive and so are filters. #1 you need a 8" inline fan for that space. #2 You need a make up air(a source of air from outside because if your pulling air out it has to come from somewhere. You can accomplish this by going to home depot and buying 1 14x10 metal hvac can with a 8' collar in the top and( or 14x6). Thats for the venting out. Also buy a 14x10 with a 10" collar. Thats the makeup air. Get in the attic clear the insulation next to a truss and cut the size you need to install the can from down below. The makeup air and exhaust air shoud be on opposite sides of the room. Cost about$25. The makeup air will be fine as is. Installed and left alone. the exhaust needs 8" duct connected, fan installed hopefully with an inline filter of some sort and then dirrected outside or just exhausted into the attic....... Fan expensive, filter expensive. I could go into how to instal if you want but it would be a couple paragraphs.

Thanks for the reply i have heard what your saying but i just couldnt afford a 8" fan but i have a plan! Ive only been able to get a 5" exhaust fan but ive managed to have just over a meter run of straight ducting and i hope that helps but i live in not so sunny england and were just coming into winter now so with the temp been low to start with and my intake will be from outside aswell so hopefully that will get me by for a month till i get a bit more cash flow

Hi, I am setting up a 8x10 room with 2-1k HPS lights. I am trying to decide how to keep it the proper temperature, so far the plan is to have a passive intake from the furnace cold air return in the floor running through cooltube or? then exhaust into the heat ducting entering the room. CO2 will always be on so i would like to keep from venting in room air. I am not sure what temp it will run if i setup like this, I am from a very cold climate especially coming into winter and the heat from the lights will contribute to heating my place. Will be a complete aeroponic flowering room and will veg. clones for 1 week before switching over.
1 - Will the heat that the cooled lights give to the room be too much?
2 - What type of cooled lights should i get?
3 - How much CFM do i need running through the lights (2 inline 1000's)

KKmd... 5" is fine. Exhaust Air is measured in Room Air changes per hour. With an 8 inch that number is high for your room. With a 5" its gonna be around 1-1/2 air changes in the room per hour. Maybe. Just keep the fan running. If your gonna pull that good but cold outside air make sure and put you 12/12 on a night schedule to help the light keep the plants comfortable. You on the other hand might be freezing you ass off. Small price to pay.

CannaBud........... Im having a hard time picturing what your plan is. I wouldnt exhaust into the room. But if you think you have a sound plan, experiment. A six inch fan will do 2-1k's. Just make sure that you filter that air aswell. I have a 10" inline fan hooked up to a inline filter. I have the 10 inch split off and exhaust 8" from the room and 6" from the lights. All with the same fan and running threw the same filter.
What type of cooled lights should you get. Get a brand that will allow you to daisy chain the lights together so that you can vent them all at once. If your temperature gets to cold in the room just stop venting the lights. Might hurt the life of the bulb but the plants will be happy.