might I be mistaken, but your running less than one what per gallon there tex?
Don't get so tied up on the WPG rule, 1) as accurate as fish inch per gallon rule. 2) breaks down on smaller, and larger tanks, 3) not based on MH's.
I love the setup. You just need to keep the shape by strategic trimming.
I have to agree with MM here. Also I think you did a good job with a tank that has 2 viewable sides. I hope to watch this one grow in.