Plumbing design HELP for my 135

We had an uh oh a few days ago and I've been searching for the answer. No, this had nothing to do with making the video. Hubby walked past the wall switch, that also controls the pump, from my sump back to the tank. He hit the switch off(pump off) and the tank flooded the carpet. I thought I had it just right, it always worked for me when I'd test it. Only problem I see might be, I hit and broke one of the return into the tank pipes, with the hood when we installed it. I stuck the pipe back into the hole and hoped that would solve it, but it hasn't. I need help. I'm afraid to go to sleep knowing potentially this tank's water could end up in my living room. I really need a diagram drawn for me of my 135 with how the plumbing is supposed to be, to the tide pool sump/fuge and back to the tank. To where if the power did go out, the tank wouldn't overflow and end up a disaster. Different stand pipes and all. Hubby says he wants to do it right this time so he'll have piece of mind too. TIA!!!!!!!!!!

 

Bummer I bet you wish you went with overflows now

Do you have some pics of were the crack in the pipe is top or bottom?

 

no not really. it may have cost me 6 bucks and a little time, but I still like the stand pipes I made and I really think they work great. It's the other pipe that broke. The clear one on the left side of the tank. I guess that kind of plastic is not meant for salt water, it was very brittle. I only tapped it when it broke. It broke at the base and I stuck it back into the hole and sand used to blow up from the hole, but I have it stuck to where it doesn't. for now. not real sure if that's where the leak back into the sump, then onto the carpet, came from. It held before I broke it. I would turn the pump off to clean it and it would stop filling the sump at a certain level.
in this pic it would be the pipe all the way to the left. that comes from the sump and runs to the tank.

again.. all the way on the left.

the one on the left behind the p.h.

 

does anyone have or can someone take a few pics of their pipes? and the overflow walls and what is the purpose of overflow walls? The way I understand it, the pipes in your tank behind the overflow walls are lower than the walls? I understand the walls would be siliconed to the walls and floor of the tank.