PHOTOBIO Advanced Quantum PAR Meter spl_jondon The HP1 plugs into a

The HP1 plugs into a 110 volt

during the flowering period till the harvest

Molded in aluminum 3/4'' drain insert ensure the drain attachment spot will never break

Comes with Spectralux 6500° K (blue) T5 HO lamps

Cooling fan system for Sunburst models

PHOTOBIO Advanced Quantum PAR Meter spl_jondon The HP1 plugs into aAll new for 2020, the Advanced Quantum PAR Meter provides accurate and cost effective measurement for all light sources used to grow plants. The PHOTOBIO by Phantom Quantum PAR meter is designed to measure PAR (Photosynthetically Active Radiation) flux in wavelengths ranging from 400 to 700nm. There is a proportional relationship between the number of photons absorbed in 400 to 700nm band and the rate of photosynthesis in plants, which is important