3K 315W CMH
Grow Lights315W
The Grower's Choice 3K 315W CMH is a single-ended ceramic metal halide lamp at 3100K, rated 565 µmol/s of PAR with a CRI of 87 and a life of 10,000 Hours.
This is a bulb, not a fixture — it needs a 315W CMH ballast and reflector to run. The 3100K colour is the flowering end of the CMH range, which is where Grower's Choice puts it — the cooler lamp in the pair is the veg counterpart.
CMH earns its place on colour quality rather than raw output: a CRI of 87 means you can actually see what your plants are doing under it, which HPS at the same wattage cannot offer. Plan on replacing it near the 10,000 hour mark.