They're definately not looking so happy there. At 4 weeks bloom they're very slow developing. You really need to fill out the trouble shooting form. Its a sticky here in Plant Problems and try to include as many details are you can. Along with your photos it gives a clearer picture of what is going on.

One point though - you might want to reconsider moving your plants in and out. This time of year there's a mass of insects around outside such as thrips, aphids and mites, any of which could latch onto your girls and cause further damage to them and heart break for you. We're having a humid, stuffy summer here and the bugs have breed wildly. The ol ladybugs just can't keep up.
Could your budget manage a couple of extra cfl's until you can get your hps?