As mentioned do NOT use the same acrylic for lids. You will want polycarbonate. It doesn't need to be thick and will not warp. Thicker lids of acrylic will eventually warp and won't sit flush with the opening.
No you can put it above, on the side. in the basement. Under is just the easiest.Does sump always have to be ran underneath a aquarium
Forgot the pictureWell I did it got a real sump,, from here https://bigfishcaa.com/
I got it for a little less then it would have cost me to just buy the material and do it myself and on top of that the people I was dealing with were amazing I would text him and get a reply it 5 min every time, there was a Baffle that got damage in shipping so he sent me out a new piece of acrylic and glue the next day. Wish I found them before I bought my tank.
Sorry to hear about the issues you've had OP. If you dont mind, what is the overflow issue you are having with the C2C? Are your 1.5" drain not sufficient. I'm no expert but what you have should be good.
They should have used polycarbonates for the lids to reduce any warpage. It cost just a bit more but makes sense in the long run given money spent on the tank.
Oh, with your lid situation. I guess lexan is less prone to sagging is what I’ve been told
They warped with in the first week. A week is too quick for me for what I paid. But also if they recess the lids like I asked it wouldn't be as pronounced. that company's communication sucks I bought a sump for About 5% of one I bought the tank for from this other company And I already had more communication about how I want it built. Acrylic creations tells you will call you a week before your tank is about ready and go over the details. I should have know you get what you paid for and they were the cheapest, live and learn. I am in the process of getting new lids made but instead of haveing only 4 lids I am going to go with 8 to see if that will help this way they are not so heavy. But if they warp I am just going to put a Canopy on the tank so I cant see them.Correct, Lexan = Polycarbonate and what is a better option for lids.