1 Need to make sure that the airline is secured to the Comline ® Foamer 9001.040 inside the skimmer and that to the muffler correctly.
https://www.tunze.com/fileadmin/gebrauchsanleitungen/x9001.8888.pdf
2 Use my glass cleaning magnet before Julian started making that clip. Tangs will alway pull the nori off them I now use INNOVATIVE MARINE GOURMET grazer
I have several of them and rotate them in and out of the tank. never want to keep a magnet in the tank all the time
looks really cool! I just use a rock and some rubber bands. I might look into that grazer. What's the glass thickness rating?