Good morning, I am wondering if someone can answer a quick question about my live well (aerator) situation, I will include some photos to help the process.
Inlet tube from back of the boat (previous owner liked his silicone)

Water travels from that inlet to the live well and aerator heads (I assume this fills the live well with water and circulates occasionally through the spigot heads).
This is the overflow that runs out the side of the boat

Here is a picture of the aerator head setup, as well as the corrugated tube that runs from the pump

Here is my question, how do I evacuate the water out of the live well? Does the tube that supplies the water also act as a drain somehow? Many I have seen have a drain in the bottom of the tank, this does not. Any help would be appreciated
Inlet tube from back of the boat (previous owner liked his silicone)

Water travels from that inlet to the live well and aerator heads (I assume this fills the live well with water and circulates occasionally through the spigot heads).
This is the overflow that runs out the side of the boat

Here is a picture of the aerator head setup, as well as the corrugated tube that runs from the pump

Here is my question, how do I evacuate the water out of the live well? Does the tube that supplies the water also act as a drain somehow? Many I have seen have a drain in the bottom of the tank, this does not. Any help would be appreciated