Hi everyone, so i've been out of the hobby about 4 years now and i am finally able to get a tank up and running again! I recently picked up a used 60g cube stand and sump from another member and could use some advice on plumbing. Pics below- as you can see some pvc was left attached because its glued in. The person i bought it from said they never set it up and had it in the garage about a year after buying from another member. I was wondering if i should take it all off and buy new bulkheads and new pvc and start fresh- opinions? There is not much room in the overflow section to work tho. My other thought was to keep it and maybe attach some spa flex to it somehow for the drain and all flex for the return. I used it on my old tank and never had an issue but it was a smaller tank and shorter distance to travel. I have never used rigid pvc to plumb a tank. I do see most ppl go that route tho. I want to keep it as simple as possible- drain and return. I did read that using 45deg elbows is the way to go and a lot of ppl seem to use unions but i want to keep this as silent as possible thats why i though flex for the return would be good. Plz help me get this going all advice is appreciated! Thanks