Just want to share my experience, I also think that bubble wands look pretty even though a lot of people don't. I can not speak for the technical side of the affect on the fish, but when I first started (and this was with a glass canopy) I did the bubble wand (very pretty) but OMG the salt creep was far worse than I ever could have imagined, it had to go, it was a nightmare. I am not saying don't do it, but may experience was terrible salt creep. Good luck, it does look pretty to me.