Big difference. Won't help if you cant keep temps under control.
If you can use the 1000 watter without a heat issue, go for it. To answer your question: The difference between the 400 you're using now and the 1000 you want to use, is huge!already have a 1000 watt system with a mh to hps conversion bulb
If you can use the 1000 watter without a heat issue, go for it. To answer your question: The difference between the 400 you're using now and the 1000 you want to use, is huge!
Vi
awesome dudeLol if u flower with ur 1000 watt hps u can expect twice the quantity when u harvest bro. Thats a harvest of truly matured sick 10 to 15 inch colas that wiegh anywhere from 18g dry to 26 gs dry.
Hope that helps