Advice? Tank Build! overflow box

Going to be buying a non drilled tank. Does anyone have experience with the h2o overflows or the ghost overflows. Would like to be able to put the back of my tank flush to the wall with minimal cutting. Equipment will be in a room right behind it.

 

I have been talking with another guy and sounds like the h2os are fairly quiet. I was also thinking about running those because I will only have to put a couple small holes in the wall for piping compared to a box. Only thing I'm looking for now is advise on drilling the glass

 

Tank will be in my living room. Would like to use some type of device to keep everything in the tank.

 

All equipment will be. But I don't want to chance fish or inverts going into an open bulkhead and be trapped in socks for a couple days while I'm away from home

 

I've been thinking the h2o one since it'll prevent anything from leaving the tank and still allow for easily plumbing rightto the sump. Any tips for drilling glass?

 

Thanks guys. I'm planning on doing a 210 dt, which will gravity drain into a free 72 gal bow front I'll use for a refugium. I'll drill that so itll drain into my sump with skimmer and such then hit the return pump back to the dt.

 

It's a drilled tank already. Unsure if I should use the current bulkheads and bottom drain, ad some pvc and pull water from the top. Kinda depends what space will allow me to do

 

When you guys plum your system how many pumps do you typically run. Do you have one big return and a manifold for your reactors and other equipment or will you run several pumps?

 

I'm in the very early stages of my build. Will be using 2 return pumps. A 1k and 1.2k ghp on a 300 is gallon system. Just didn't want to have a dozen pumps running if I didn't need to.

 

I already have the pumps is why I was going to use 2. Just buy one big pump then, plumb it to a manifold for returns to tank and ports for reactors and such?