@Troi, I don't care about theoretical scientific explanations, I'm not writing for the Daily Scientist here. I've just wanted to talk with you about simple experiments that any 10 year old can do but as far as I see you just want to bash EI with every answer and impose your ideas. Fine with me, I'll spend my time doing other interesting things than argue with you.
Why do you automatically assume that I am bashing EI. I am not. Tom Barr is legend, and EI is very clever and elegant in its execution. Neither am I bashing high-energy tanks, I think when done well they are incredible, Takashi Amano and I are best friends.
Nor am I imposing or even trying to impose my ideas. I wouldn't care less if your favorite colour is pink or blue, we all have different opinions and I respect that, it's what makes us individuals and so interesting.
What I am doing though is challenging preconceived notions that have no basis in scientific fact; which incidentally abound in the planted tank world. I realize this may be perceived as heresy, challenging peoples entrenched belief systems always is, but all I am doing is expressing my opinion.
Judging by the reaction so far, I count my blessings that the Spanish Inquisition no longer exist...or do they?