US$ 49.99
• Water use efficiency helping control water loss in hot weather and improves tolerance to cold eg frosts
High accuracy graphite EC/TDS probe
Stability indicator
Suitable for use in hydroponics
LightScout Quantum Light Meter (Pre-order) K2SO4 • Water use efficiency helpingIMPORTANT: 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$ 49.99
US$ 29.99
US$ 29.99
US$ 24.99
US$ 29.99
US$ 24.99