I was just watching Jorge Cervantes DVD, and I have a few questions about lighting. I have heard that you should not have more than 8 plants under a 400w HPS, but he had 16 i believe under each light. Is this too much? Would it be better to have less plants? I was also wondering about the electricity bill. If I was running four 400w HPS, I assume my electricity bill would be very high and set off alarm signals to the cops. How many can you run in a small house without it looking strange on your electricity bill. Are there any forms of affordable generators that can be used to power some of the lights?