retun line

I am planning on setting up a Cor-15 with a 1” return line to my tank. Should I be using 1 or 2 return bulkheads and are there any differences that I would notice if I only have 1 return outlet?

So I’m going back and forth on plumbing a 75 gallon tank for return lines, my 1inch drains x3 overflow will be PVC, so it ok to soft plumbing for the return. What’s the durability? any leaks to be worried about? I want to plumb 2 -3/4 returns on each side

I have a Waterbox 170.4/5 on the way, and it has a 1" ID return hose. I purchased the Ecotech Vectra M2 as a return pump for it, and I was wondering, how did you guys plumb your Vectras? I want to make sure I did it right. Lol! Pictures would be extremely helpful!

Just like the title says, how much flow do you run through your return pump and back to the display tank. There are a number of opinions on how much GPH you should (or shouldn’t) run through your filtration systems, but really for this poll, I’m just interested in how much flow, in approx. GPH...