have to agree dude its bloody cold I have to wear a coat to go in the loft ha ha my lights out temp is just a bit higher than your lights on but I am running two heaters lights on temp is 23 to 24 c refuse to use any more electric the joys of LED
Also have to agree, cold affected my temps and watering almost immeadiatly so just bought a tube heater today, but would much rather use that electric on extra lighting.