Sativa1970
Well-Known Member
Your plants should start at 80 deg and 80RH. That drops through the grow. In flower you want mid to low 70s temp and 60-70RH. Similar to the conditions they grew in outside over the summer and fall.
You can do a seedling tent, then a veg tent, then a flowering tent so heating is easier but you are building multiple tents. A tent can be an official grow tent, a closet garment tent, large totes, tarps, cardboard boxes, or whatever you can think of. No flammable materials near heat source or conductive material near power. I have seen plastic from celling to floor inclosing the furnace heat duct into a small area work.
Smaller space like a seedling box can be heated with the heat generated by the LED lamp. You decide how big you want the plants to be fully grown first. Bigger grow space is more expensive but also more yield. For your plant, for every foot tall you can assume a foot wide at harvest. Height of 5 gallon pot + height of light with hanger + 18 inches for space between light and plant = "X". The desired height of your plant "Y" equals the width of one plant. Add X + Y gives the total height of your tent needed. Half of Y is the plant height you should switch the lights to 12/12.
1500 wats would easily do a 10x10 room. Use the type that looks like an old steam radiator. even heat, safe and efficient. Do not use a ceramic heater near flammable plants and materials unattended! They will start a fire! Still have the scars from jumping through a window to escape a fire from space heater left on. Not fun, don't do it, ask @Bill284.
You can do a seedling tent, then a veg tent, then a flowering tent so heating is easier but you are building multiple tents. A tent can be an official grow tent, a closet garment tent, large totes, tarps, cardboard boxes, or whatever you can think of. No flammable materials near heat source or conductive material near power. I have seen plastic from celling to floor inclosing the furnace heat duct into a small area work.
Smaller space like a seedling box can be heated with the heat generated by the LED lamp. You decide how big you want the plants to be fully grown first. Bigger grow space is more expensive but also more yield. For your plant, for every foot tall you can assume a foot wide at harvest. Height of 5 gallon pot + height of light with hanger + 18 inches for space between light and plant = "X". The desired height of your plant "Y" equals the width of one plant. Add X + Y gives the total height of your tent needed. Half of Y is the plant height you should switch the lights to 12/12.
1500 wats would easily do a 10x10 room. Use the type that looks like an old steam radiator. even heat, safe and efficient. Do not use a ceramic heater near flammable plants and materials unattended! They will start a fire! Still have the scars from jumping through a window to escape a fire from space heater left on. Not fun, don't do it, ask @Bill284.
He is essentially in a drain to waist hydro,,,ish composty mix. In his system standing water would most likely cause problems.
