Invisible Sun’s ISH75 V is a compact, ready-to-hang LED grow light built around Samsung LM301H diodes. The model uses a single ISH150 PCB populated with 150 LM301H (3500 K, CRI 80) LEDs and draws about 74.9 W at the wall. Invisible Sun positions it for multiple tasks: seedlings and clones at 30 in, vegetative growth over a 2×2 ft (60×60 cm) space at 25 in, and even flowering a single plant at around 15 in. The ISH75 V launched in late 2019 as a non-dimmable unit and, from January 2020, was also offered with a dimmable driver option. The company cites an efficacy of roughly 2.5 µmol/J. Shipped fully assembled, it includes a hanging kit for quick installation.
