I am having huge problems in my tank as of recent and am trying to figure this out and rule it out as a problem. I have a Tunze 9001 in my Waterbox Cube 20. The only way to use this skimmer is to put the skimmer facing sideways and the magnet is being submerged in the water. I was wondering if this is safe to do so. I have recently been having problems with euphylia mouths gaping open and don’t know the cause. So can Tunze 9001 magnets be submerged in water or should I take it out and get a skimmer that’s magnet won’t sit submerged and instead outside of the tank?