fresh water tank install.

[someguy]

My question is there are two outlets on the bottom of the tank then a air vent on top. I know one goes to the water pump but not sure on the second? what does that second one do?

[CaptainInsaneo]

Water in? Unless there is some other way of doing it?

[gbstewart]

one line for the water pump, and the other maybe for a drain. that's the way mine is, then on the top there's the fill, then the vent.
gbstewart

[someguy]

thanks for the advice I will use it for a drain.