Vibrations under a Mag18

[sergeantpilot]

Just wondering if the rubber pad is necessary under a mag 18. It is sitting in my sump humming along sitting directly on the glass bottom. I can feel vibrations on the glass sides, it appears the pump is working fine. Is this likely to crack my piece of glass on the bottom of my 25gal sump?

[prosnow]

had the same thing with my mag 7, i just couldnt stand the noise so i put a bit of filter floss between so i couldnt hear the constant buzzing sound...i dont think it would crack your glass but thats my opinion...dont msg me if it does . how thick is the glass btw..

[sergeantpilot]

The tank is a standard 25gal from the pet store, probably 1/4 inch or 3/16, hard to tell exactly, thanks for your input,

[G1GY]

Just put it on top of a media bag with fine areganite in it.