So you have only the hsp turning on every few hours for half an hour, and no flouros? this is your only light source? Just to let you know my power in Can is a whole lot cheaper than the US. Also the power up phase of a light is when it draws the most power and puts a load on the ballast and bulb. That means alot of wear and tear on your system.

If you can keep the temp right I would just put them in the window for now, that's what I do. If you don't I would get a cheap socket and put an incandesent bulb for heat, and a cfl for light. Save you HSP because you're wasting it right now and the plants are barely using the light it's providing.

:hippy: