I was going the aluminium route but Improved living said the plastic would be good, they know what they doing so trust them, push comes to shove if i do see it warping over time will change to aluminiumAre you mounting the LEDS directly onto the trunking.
I'd be worried about that. Look I run 10w LEDS at 60% and they can get very warm if not hot.
Not sure about the 3w but I'm sure of 2 things that could happen, the LEDS will warp the plastic from the warmth of the light or worst case physically melt the plastic trunking.
It's a great design idea.
But I would of suggested getting some aluminum U channel from a big hardware outlet.
Just my 5c
Other than that great looking project.
Good to hear, I was luckily not to far into my previous build hahahah wait my bonsai's have a 800 bucks perspex box now, I did a redesign with I now feel more comfortable with and its slightly more sleekHi There
Just my 5 cents, I recently ordered and built the Improved LED lighting kit, 5 channels 10 drivers and 7 LEDs per driver so 70 LEDs in total. This is for my 1.2m tank, I myself used the exact same plastic trunking as you have used and It has Been running for just roughly over a week, the LED temperature is not an issue at all, But the drivers do get extremely hot, but also not hot enough to melt the plastic I had to move the drivers out of the plastic trunking as the LEDs were pulsing quite a lot due to the excessive heat as the drivers were enclosed so i removed the plastic trucking drilled vent holes around where the drivers were located and so far its been running like a dream with no hiccups hope this helps and saves a headache or two.