Sell it for retail price once the sale is over. Turn a profit. Flip it!
How about making it a sump for your 75. Then you can ditch the HOB skimmer.
Make that your mangrove tank and put 12 mangroves in it and put a frogfish or small angler. That is what I am working towards.
well if its a refugium, u need it connected(plumbing wise) to your main system to be beneficial. People make refugiums all the time as an extra tank, with sandbeds or mud and plants and fish. They can be just as interesting as the main tank too