Magnetic ballasts are the classic way to run an HPS lamp: a simple, sturdy design without sensitive electronics. Right now this collection holds the Platinum Magnetic Ballast 600W. A magnetic ballast is heavier and produces a little more heat and hum than an electronic one, and it can't be dimmed, but many growers value its durability. Mount it outside the tent or on a heat-resistant surface with some air around it. Make sure the wattage matches your bulb. Need dimming or quieter operation? See electronic ballasts, and find bulbs in 600W HPS lamps.
Questions & answers about Magnetic Ballasts
All growing questions →- Lighting LED or HPS: which grow light is better? LED, for most people with a tent. It's more efficient, makes less heat and the diodes last years. HPS costs less to buy but needs more ve... Read the answer →
- Lighting How many lumens does a grow room need per square metre? None, really. Lumens measure what your eye sees. Plants use PPFD, in µmol/m²/s, so compare lamps on that. Read the answer →
- Lighting How many hours of light do plants need in veg and in flower? Photoperiod plants usually get 18 hours on and 6 off in veg, then 12 on and 12 off to flower. Autoflowering plants can stay on 18/6 or up... Read the answer →
- Problems & pests What is light burn and how do I stop it? Light burn shows as bleached, yellow or crispy leaves at the top, closest to the lamp. Raise the lamp or dim it. Read the answer →
