Notes from Penny:
Though the Cobalt MJ powerheads come with a suction cup mounting system be aware that over time the ribber suction cups degrade & will FAIL! Not a matter of IF folks, just when! Making the investment in the Sure Grip Magnet Mounts will ensure that never happens. When a powerhead falls it will dig a hole to China in your sand or directly hit sensitive corals/animals with disastrous results! Not to mention cloud your tank big time! The mounts also allow you to easily move your powerheads which is a must in this hobby.
Sure Grip 50: Up to and including 1/2" thick glass
Sure Grip 100: Up to and including 3/4" thick glass
The Sure Grip Magnet Mounts are a set of powerful magnets which comes with an assortment of brackets. Again, these are WAY stronger than suction cups and are safe for glass or acrylic aquariums. Simply attach to your powerhead with supplied brackets and magnetically secure onto aquarium wall. Measures 1-3/4" x 3-1/8" x 3/4" thick.
Compatible with: Cobalts 400, 600, 900, 1200, Seio Super Flow M620, M820, and all Tunze Streams.
Powerheads sold separately.