That LED is definitely not strong enough. There's only a few that are affordable and strong enough for plant growth, like finnex ray2 etc. CFL's are doable ,but T5HO's are better. I use a 27w CFL on a 7g tank and it works great for med light.Thanks "FlyingHellFish" & your tanks are awesome !!! I was so confused about the lighting and now im confident that I can use T5Ho's or CFL's . One more question , when you speak about LED's , what LED's are you using on your tanks and will the below work ?
This is the only one available in india.