Flow for drain 1 inch pvc durso

[Asm481]

I need to clear some space under my 75 gallon Aqueon tank. Currently I have an ugly 1 1/2 pvc drain line adapted to the standard Aqueon bulkhead. I think I am going to go to 1 inch but I am not sure if it will drain fast enough. I am running about 3-400 gph through the drain right now.

 

[lapin]

https://flexpvc.com/Reference/WaterFlowBasedOnPipeSize.shtml