Mount Tank Upside Down

I have been researching some sites that give install tips. On one it said NOT to mount the tank upside down. If I have a tank that has a port on the top and the bottom it would be ok to mount it upside down right?

Yeah, if the drain is at the lowest point.

If you have a port top and bottom as long as one of them are the lowest point of the tank you will be good to go…

agreed

Thanks for the tips. I’m sure I will be posting more threads as I gather my parts and plan my install! Glad to have help from the experts.