opps tank flooded

i would love to drill the tank but i dont want to tear it all out again and drill it then set it all back up, If down the road it does flood again theres not much it would ruin besides the drywall and thats 6 bucks for a 8 foot sheet and maybe some trim around the front of it but if that happens then that would be my chance to drill it and go that route. but from looking at my 180 to my non drilled its basically the same set up the only difference is the pvc doesnt come up through the bottom it just hangs over the back kinda like a overflow box does. If you think about it that way its almost the same set up minus the box. I appreciate all of the input and advice from everyone and hopefully this setup doesnt cause a problem and if it does i guess that will be the time i drill the tank when most of the water is already out.