Difference Between MH and HPS

MH lamps provide a more natural appearance in color and are typically the choice for plants that have little to no natural light available. High Pressure Sodium (HPS) lamps provide more yellow/red spectrum, which is ideal for most plants that are actively fruiting and flowering.

1. What's the difference between HPS and MH?
2. What is better for veg MH or HPS?
3. What's better HPS or Metal Halide?
4. Which is hotter HPS or MH?
5. Will HPS work for veg?
6. Can you use MH bulb HPS ballast?
7. Why is HPS better for flowering?
8. Is 150 watts enough for 1 plant?
9. Are HPS and MH bulbs interchangeable?

What's the difference between HPS and MH?

HPS vs MH grow light spectrum differences

The HPS has a red or orange tint to it and is used primarily in the flowering phase of your plant's life. The MH bulb focuses on more of a blue spectrum and is used primarily for the vegetative stage of plant life.

What is better for veg MH or HPS?

While either type can be used for the full growing cycle, when combined, using an MH grow light for vegetative growth and flowering under an HPS grow light is the most recommended HID grow light setup because utilizing the strengths of both types at the right times produces the best results.

What's better HPS or Metal Halide?

HPS is about twice as electrically efficient as metal halide. Photosynthetically Active Radiation (PAR) is what really matters to plant growth, and delivery of usable PAR is better with HPS than metal halide. ... Metal halides deliver, on average, about 80,000-110,000 lumens per standard 1,000-watt bulb.

Which is hotter HPS or MH?

MH IS hotter than HPS. CFL's (up to a point) are cooler than HPS.

Will HPS work for veg?

In response to the general question, can you use an HPS bulb for veg, the answer is yes.

Can you use MH bulb HPS ballast?

Yes MH bulbs will work in a HPS ballast. It's not dangerous either.

Why is HPS better for flowering?

HPS grow lights produce fast growth, fat dense buds and consistently big yields. They efficiently turn electricity into light, and they give off a type/color of light that promotes better flowering.

Is 150 watts enough for 1 plant?

You might want to consider upgrading to at least a 400w hps/mh system. 150 watts hps - 16000 lumens is more than enough for 1-2 plants.

Are HPS and MH bulbs interchangeable?

Unfortunately not all ballasts allow both the MH and HPS bulbs to be interchangeable. While some do, it's never a good idea to assume both can be utilized. However, it is possible to swap out both a MH and an HPS with the use of a Conversion bulb.