I use the Jebao SLW-10 in the top left area under the overflow. Makes a nice standing wave on the 2nd or 3rd speed setting and the first mode setting. The overflow isn’t big enough to generate enough flow with the return pump. Not unless you want to cut out some of it and go with maybe a 150gph pump.Tank is doing fine. But, probably not unlike others I’ve outgrown it VERY quickly. I can’t seem to get the flow right and bought the Weakest power head I could find and it was way too much. Smallest sicce pump and remove power head. Still not enough……RFG nozzle still not happy. It’s just too small and I should’ve thought longer about the decision. I’m not in any particular rush. But I’m currently building out my 22g long that I’ve had laying around for 3 years and never built. I’ll use this journal for my transition and journey into the bigger tank.
I’ve got too many expensive aquarium goodies laying around to be messing with a 3 gallon tank. I shouldn’t have let my fear of Dino’s dictate the size of the tank I was building.