So I’m really not sure about that spot. I put it there for cabling and maintenance purposes. The Nero 3 is a great pump. I originally ran it on random at with a range of 20%-55% power but I thought the fish didn’t like it. So I switched to continuous flow and keep it at 55%. The tang lives to swim against the flow and I think the tank gets decent flow. Against the back wall might be a good idea. I have even seen some in the front. Also been considering getting a separate to point in the opposite direction but closer to the front and lower.Looks great! I have a PM 15 and wondering how you like the powerhead in that location? Most, including me, have it on the false wall blowing out. I'm interesting in experimenting w/ the flow pattern so wondering if the flow perpendicular to the return is better.
Also, I have the Kraken cup mentioned by @Hasted earlier. I like it. I only use it for filter floss on occasions. Fits like a glove. Can also be used to stack other filtration options too.