Originally Posted by louisvillelady
I have grown and propagated numerous aquatic plants. I have never had any luck with LED lights. I do not believe the spectrum to be correct for plants. The only thing I grew with LED lights was pond scum. YUCK!
This may be true of some LED's but you *can* get the correct spectrum and plants *can* grow very well with LED's. My "grow out" tank has LED lighting.. I have an HC carpet going in my shrimp tank with LED lighting.
I have 3 different Finnex LED fixtures on 3 tanks and my plants are all doing great with those. I was using some undercabinet LED lighting from IKEA (DIODER, I think) to light my two 2.5's tanks and all the plants in those tanks (even the moss) eventually died... but those LED's are closer to 2700k, not the 6500k that plants need, and they weren't very bright... so to be honest I'm not sure if it was a color temp issue or just a not enough light issue. I've torn those tanks down and I'm not even using them, so it's not a problem any more - the lighting was moved to my china cabinet :)