I've always loved Red Sea tanks, my very first was a used RSM130D. I've since upgraded to a Oceanic 72 bowfront but had the urge to upgrade.. again. Didn't really consider the Reefer series, couldn't take the price for not being exactly what i wanted. I've had great success with a high flow/ fuge system and the Reefer return is very limiting. But.. I found a 525XL glass only semi-local, and for a great price! I figured for the savings in glass, I could DIY this into a high flow system. With a rough drawing, I (over) built the stand out of steel. Not the first steel aquarium stand I've built, but definitely the biggest. Used 1 1/2 square tube steel with lots of bracing. Next came the wood siding. Plumbing was my main concern from the start. Option: The easy route, do over the back returns. But i felt it took away from the sleekness of this tank. Option 2: Drilling the tank for returns. I've drilled glass before, but nerves got the best of me. Was considering paying to have it done, but figured it really negates the good price and if i wanted full custom i could sell it and buy custom. Option 3: Run a herbie overflow and return though the supplied holes as designed, only issue was the tiny return and proprietary metric Red Sea plumbing. Final decision was to modify the stock bulkheads quite heavily.. With a hack saw, step drill, and heat gun I was able to manipulate the PVC into what I wanted. everything fit tight and with the primer/ glue used I'm very confident in the joints. No more metric or flow issues, just 3 1" bulkheads that interface with the bulkhead plate on the Red sea Reefer. I sized the overflow and emergency to 1 1/4" and left the return at 1". Waiting on poly/paint to dry, and a some return parts from SCA. ...Will update soon.