Change lights on two weeks of flowing

I’ve been using three 40watt cfl at 2700ks each I got my new light in to day it’s a 400watt hps dimmable digital I have thr hps bulb in should I start out at 200watt and then go up to 400.thanks for any information

If your startimg flower just put it on 400 make sure you have ventilation. By the way what size is your grow room before you flip the that switch?

B Safe
Will

It about 30" x 60" closet I can open the door or put fan.thank you reply

Keep an eye on that heat, believe me a400 watt HPS light can put out t be heat

B Safe
Will

Always add more light if you can. More light = more yield; All day, every day!

Ok thank you.it’s going and it is hot.they seem to like it.thanks again

Between three 40watt cfl and 400 watt hps I don’t think there’s not much heat drenfrence in between them.I hope the elt Bill won’t be much different.the 40watt raised it about 14 dollars a mounts.

Ya you should see what my bill has been. It would make you feel good about tour’s…lol

B Safe
Will