Thanks for this information. I have very fine white sand and it blows around badly with the slightest movement by either fish or powerhead.
Do you think even the smallest of the Koralia would be out of the question? Or do they have to much push also?
I really need something that works with a magnet so that I don't have to try and either suspend or mount from the rim of the tank.
The magnet would work great, I just need it small enough to not make a snowstorm.
