Originally Posted by charlie_bebop
However I've seen on ebay a lot of lighting units like this:
The thing is most of those cheap ebay LED mass light arrays/tubes is that there is not even enuff power for mood lighting,LOL.
But seriously, the reason most useful plant growing LED fixtures are expen$ive is due to quality optics, powerful AND Efficient LED emmiters, and good design.
There have been many threads here on those cheap 10watt china LED emmiters bought off Ebay
Though I dont have any experience with these chinese Leds.
You dont need bright lights to use co2 in your aquarium. But I do understand the desire to obtain useful LED on the near cheap.