600W is the most popular HPS wattage for home grows. One lamp covers a 100x100 to 120x120 cm tent well and works with most standard reflectors and ballasts. In this collection you'll find the Philips GreenPower and GreenPower CG, the Horti Sun Power PRO and a Platinum HPS lamp, all with E40 sockets. If you use a dimmable ballast, you can run the lamp at lower power in early flower and turn it up later. Pair your bulb with a ballast from electronic ballasts and a reflector from reflectors.
Questions & answers about 600W HPS Lamps
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 →
