Looks like a cool way to go. If that bit I accidently got with my rotala keeps growing I'll prolly try something similar. For now that thumbtip sized bit is just sitting on the substrate with a small piece of a moss weight holding it down.
I though about floating it in my tank too, and as little as there is the light blockage wouldn't cause probs, BUT how do you deal with surface motion from filters? There's no surface agitation, but the current from the output moves the surface around a fair bit, along with the floating plants, then eventually sucks floating plants under and shoots them across the tank.
I though about floating it in my tank too, and as little as there is the light blockage wouldn't cause probs, BUT how do you deal with surface motion from filters? There's no surface agitation, but the current from the output moves the surface around a fair bit, along with the floating plants, then eventually sucks floating plants under and shoots them across the tank.