US$ 149.50
Stability indicator
Suitable for use in hydroponics
4mm Tee Joint x 1pcs
High accuracy graphite EC/TDS probe
Magnesium + Sulphur
LightScout Quantum Light Meter (Pre-order) K2SO4 Stability indicatorIMPORTANT: Receive in 4 6 weeks Measures photosynthetically active radiation (PAR) from 400 to 700 nm Range of 0 to 2,000 molm 2s 1 PAR Quantum Light (400 700nm) The light that drives photosynthesis in plants is Photosynthetically Active Radiation, or PAR light. This is also referred to as Quantum light, because it is measured in units of moles striking an area over time. Though PAR light ranges from 400 to 700nm, the region brightest to human eyes is
US$ 149.50
US$ 24.99
US$ 29.99