okay, so we got a 75 gallon tank today and I have a DIY 20 Long sump for a fish only tank. I built a bubble trap on both the in and return sides around a middle section for a refugium. The tank is a standard 20 gallon long from *****. What should I put in my middle section for the refugium area? And what lighting should I put in it to stimulate growth of algae and Chaeto in the ref. rather than the main display? I have a Current USA light with timer I purchased a year ago I can use, but will it be enough to stimulate good growth? How long should I have the light running? I have plenty of well stable “live sand” and live rock to put in it, but I’m thinking about trying to find some cheto as well. On the sump I put a Fluval 70 HOB filter to put any carbon or other nitrate reducers as needed. It pulls from the in portion and dumps back into the in portion. I figure why waist the past equipment if I can use it to add additional filtration. What do you all think? Where is a good place to order chaeto? I do not have a local location to purchase any. I will take a picture when I compete the setup tomorrow or Monday. It will have black sand and black background on the main display. The wife didn’t want living coral, so it dose have artificial coral ;( ... not my idea but the wife gets what she wants. It’s more for her than me. I have a 45 gallon I’m gonna try and build for living coral in my room .