Hgrow
Active Member
The inside pics I post can show us 75W LED light , only small heat sink for cooling heat , that's not enough. Even if they use 120mm internal cooling fans ,not good . You can check http://www.ledgrowlightsdepot.com/collections/california-lightworks-led-grow-lightsThis led grow lights make the power supplier outside, so all the LEDs can be work very well. You can see the detail from this link
http://www.ledgrowlightsdepot.com/collections/front-page-collection/products/nova-m9-380-watt-led-grow-light
(Worried about excess heat? The M9 contains 4 x 120mm internal cooling fans and aluminum heat sinks that assist in drawing off any excess heat produced by the LEDs. The modular design of this light make it simple to personally replace any parts within the 3 year warranty.)
California lightworks , from outside ,you can check its powerful heat cooling system . That's why they have better quality , because they have better cooling heat sinks . Heat cooling is very important for All led lights products , so that's not enough to use that small heat sink for cooling heat .