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GPF UPTAKE is derived from humified ancient bogs and has been designed with low molecular weight humic to be more compatible with hydro systems
Max Exhaust CFM: 200 cfm / 350 m³h @ 0
This fitting is used for the flood/drain cycle in flood tables
Philips Greenpower CDM lamp 315W Elite MW 3100K - Product code 100012
Which means
Par Watt Meter W / Integrated Sensor Nutrients GPF UPTAKE is derived fromLumens measure the intensity of light to the human eye, but not necessarily the spectrum of the light. Photosynthetically Active Radiation (PAR) meters measure light intensity within the spectrum that plants use most to photosynthesize (excluding UV light) from 400 to 700 nanometers, which covers both the blue and red spectra of light. Use these meters to measure how well your lights are covering your grow footprint and adjust your light setup
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