That hot spot depends on the LED. They are not all the same. Those Apollo LED lights get very hot, more so than a HPS of equal wattage. A 600 Watt LED may perform as well as a 1000W HPS, but it still puts out similar heat to a 600W HPS. Its cooler than a 1000W HPS for sure. Keep in mind there are a lot of warehouses in china full of LED diodes from the early 2000s. Its fairly common for a entrepreneur to buy these warehouses just for their inventory, hire a crew to assemble light, and ship them over here. Just research what you plan on buying
Yeah tbh 1w led chips can be a pain and the panel is huge to cover a good area but dam
1w led chips still beat everything else, I mean cobs are so easy 10w to 2000w from 1 chip great and they don`t hot spot as bad as 5w or 10w board types do
but if you want say 500mm to 700mm of good canopy depth and stay cool then I would hunt down the best 1w chip panels you can get
to many people selling/making them they`ll be "old" now
Ok your never going to get good bud more that 500/600mm down the plant so your just going to grow 500mm to 1m plants max, with good cobs you can grow trees much like hps
but them 1w panels can really make some nice top buds and they are cool and don`t use much electric just gotta shop around
And the reason I like leds is I can use 1200w of led where I would normally only be able to use 1 x 600w hid before I got a heat issue, just saying when your working under hid`s vs leds you feed how much hotter it is in the light beam
with leds some of the heat if not most of it is vented via the heatsinks making controlling it easier with hids most of it is emitted by the lamp, so you can`t just block it out as you`ll be blocking out the light too
with liquid cooled leds you could put a heat exchanger outside and then you`d need 2000w or so before you got as hot as a 600hps, of course a lot of led lights have IR emitters now but if your in a hot country you can go for led units that emit less IR you`ll still want some
but the sun`s giving you so much that I doubt they`ll need more heat during lights on
My 1st cob units used 300w each just red and blue is all they put out, 2 of them just in a room was cooler than a 600whps in a cool tube was
So 600w of good cob will run cooler than 600w of hps in a cool tube, they still get warm but in my experience not as much as hids do, but I`m not saying HID`s can`t grow some really good herb
In a cold country with cheap electric and a large area I`d probably go with hids
but in hot weather, low power led chips would work best, cob`s would probably be a bit easier to install and look after