Sanchez looks great. I noticed you have potted plants on top of tank, ever thought about rooting pothos in your aquarium would reduce nitrate levels.
What brand of pellet are you using? The color is great! I'm trying to get my Mac on pellets but he isn't that interested and it's been a week of me trying.
That's a lot of empty space - I would add more wood and plants to make him feel a lot more comfortable. No wonder he's so shy.