Then it should be for older aq pump as the new impellor should be integrated type. Yr pic is likely showing the new version. Thanks for the clarification. One potential buyer for my h&s. Lol.
Possible to buy in marketplace. Get those outsump skimmer like deltec older series, 851, 701, apf600, etc. However, u got to undertake possible risk of leak. Good day.
Bro, how much yr tank is worth depends on yr luck in getting a buyer. There are reefers paying ppl to buy their tank. As for design, get the concept and seek advice or browse thr net for inspiration.
Just be prepared glass might shatter if u place too near the water surface unless yr mh don't have the glass protection. In that case, yr reflector or mh bulb will subject to salt spray. Having said this, if u are keeping less "flying" fish.