Florescent Electronic Ballasts is a gadget set in accordance with the heap to constrain the measure of current in an electrical circuit. To provide plants an optimum light source a suitable ballast is essential to install with grow lights. Electronic ballasts with multiple leads (e.g 50) are available. Healthy Harvest Hydroponics and Horticultural Supplies offer easy to install, economical, top quality, reliable and advanced ballasts to upgrade your grow lightening set up.We offer worldwide shipping including states of USA as Miami, Florida, Colorado, Denver, Michigan, California, Los Angeles, Oregon, Detroit, Georgia, Tampa, Costa Rica, Colombia, Bahamas, Jamaica and other countries as well.We will be happy to answer your queries. Healthy Harvest ensures healthy plants and happy you!