Nice gar! I look forward to seeing what his final housing will be!
Try getting him to take pellets and/or pieces of fish/shrimp; you'll save a ton of money while still providing your gar with a safe and balanced diet.
Also, you'll have to watch with putting an RTC, TSN, or RTC x TSN in there with him; it's barbels will get shredded for sure. However, it might work in a larger pond setting as it has worked out for at least one member that comes to mind.