I don't have a timer yet, but flowering is coming up. Are there timers that can switch a space heater on when the light goes off? Would a heat pad under the pots, or under whatever happens to be elevating the pots, work to keep the plants warm enough? I'd like to save on wattage if possible... it gets around 30-40 degrees F at night where I am, and my house has poor insulation.
I'm growing in an approx. 3'x3' closet area. Right now under 250w mh, going to flower under 250w hps.
Anyone who gives advice, please keep in mind I'm kinda broke... and thanks in advance.