Pro-emit’s DIY-M-KIT COB SMD 150W is a do‑it‑yourself LED grow light that combines efficient COBs with an auxiliary SMD board to extend spectrum and output. The kit pairs Cree CXB3590 COBs in 3500K with a Samsung LM301B 5000K board, augmented by Osram deep‑red (660 nm) and far‑red (730 nm) diodes, and mounts them on a passive‑cooled chassis. Pro-emit rates the 150 W kit to cover up to 80 × 80 cm and reports an average PPFD around 431 µmol/m²/s in internal testing. The hybrid COB+SMD approach broadens blue and red content beyond a single 3500K spectrum while keeping assembly practical for hobbyists. Dimming can be set up internally or externally, depending on the chosen control setup.
