Gamberro
Well-Known Member
then you'll be able to help me explain the difference between electro-magnetic fields and hanging bar magnets in your grow room!![]()

True, the magnets on your wood train set will not work >.< Still I am interested in the possibility of using a small electromagnetic field in a grow room, as the article stated a 20% increase in growth. The other problems, besides, are that
1) does that growth necessarily contribute to the yield?
2) is it really cost-effective? (electromagnet+power=$)