Description
The Metal Ace is a metal halide (MH) conversion lamp designed to run on a high‑pressure sodium (HPS) ballast, or a dual-compatible 1000W digital ballast. That’s its entire magic:
It lets growers use MH spectrum on an HPS system (or dual-compatible digital ballast) without changing the ballast. Note, if you are using a dual-compatible digital ballast that has a manual selector for lamp type, choose the “HPS” setting when using these bulbs.
So a grower with a “one‑dimensional” HPS setup can instantly add the blue‑rich vegetative spectrum of MH — turning their lighting system into a full‑cycle MH/HPS grow solution.



