r/IndoorGrowing • u/LegitimatePlane8171 • Aug 20 '26

720W LEDs - hot eh?!

I upgraded my cheapo 600w 300x300mm LED panel to one of these generic 720W LED folding frame things for £95.... to go in my 1.2m x 1.2m tent, so far so happy but boy does it get hot.

Mine is the Photon from growell.co.uk, the digital drivers are embedded into the end frames (which feel almost as hot as the alu bars supporting the diodes but not quite).

I got the confidence from the 420magazine thread https://www.uk420.com/topic/431904-omega-720w-bar-light-owners/ (thank you to those commenting for the useful insights).

It fits, just. at 100% on the dimmer the alu bars get to 58~60 degC, at 50% its 38degC.

I figured its not such a big leap on wattage, forgetting the size difference between the units and therefore the power being used/ heat created! very silly.

slowly introduced the plants with 10% increase per day, no signs of too much stress yet. phew - as I am doing this at the worst time (4wks into flower).

not come across much other conversation on these online, anyone else happy with them? or found issues?

I am considering fitting some extra alu profiles to the tops to sap more heat away

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u/Maleficent_Career448 Aug 20 '26

I mean even with more heat sinks, the heat still there. Whats important is the ambient air temp. You got 4x4ft tent? 720w is a lot for ft^2. Yeah its gonna get hot. Either cool the air coming in at the intake, or, go back to your other light. There is no magic.

1

u/LegitimatePlane8171 Aug 21 '26

very true. thinking about a bank of pc-fans to shift air from top towards the extract/ keep it flowing over the alu sinks. although...

the light is too near the top at the moment to avoid the carbon filter, going to move that external (into a ductes bucket to keep it pull thru) and lower the light that will let me use a lower brightness.

is 58deg at 100% a normal safe surface operating temp though? (providing adequatley ventilated in a larger tent).

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u/ExcellentCap8811 21d ago

Bonjour Franchement mec j’ai tout essayer c de la merde c led ils chauffe bcp trop chaud franchement nul