I'm saying that the canister filter was designed to use a siphon as a water delivery method. Over the lip of the tank, the water flows to the can and is pushed back up to the lip and over. Not pushed into the can. IMO
there will be alot of pressure on that impeller but that's just me.
If your tank came drilled, it was drilled in anticipation of a sump not a canister filter hooked up to it.
We're not talking about the end of life as we know it. It's advice. Take or leave it. It's your tank. It may work out fine, if it does that's great.
The comments/advice are to help those who may read this and think it's a standard way to use their can. Work or not, it's not.
Not to be repetitive but...... enjoy