Rocket Soul
Well-Known Member
Some lux meters are made for sunlight: reacts different to the spectrum we use, and also:youre right, meassured the 6 boards with hlg320 combo and it is more 90k plus 2" away.
They only measure the unidirectional light, not the light coming from all different directions like under a tight board build. Almost better to go by watts: 30 per square foot with a fixture like this is plenty, move up and down and let the plants say where they want the light. Best of luck and please post your plants if you can