I set up the oil heater with the thermostat set for 25c and during the full period i used the oil heater the thermostat never dropped the heater off once lol
I had a grow going this summer with 4 of the clones from the same plant and only harvested 16 ounces dry thats 2 Ounces under my winter grow with 2 more plants but with only 12L pots.
Pot size is important you would yield roughly the same if you added that perlite to your soil mix in a bigger pot and only had the single plant.
at least my thermostat switched off the heater when my 600w powered on :
I had a grow going this summer with 4 of the clones from the same plant and only harvested 16 ounces dry thats 2 Ounces under my winter grow with 2 more plants but with only 12L pots.
Pot size is important you would yield roughly the same if you added that perlite to your soil mix in a bigger pot and only had the single plant.
at least my thermostat switched off the heater when my 600w powered on :