The tank looks great! And I thought my vals outgrew the 40 gallon fast, I bet they fill that tank up quick.
I've been trying to program the LCD for the past couple hours. Fortunately I got a second arduino to use for my paludarium
so I could use that and not worry about the LEDs flashing on and off each time I had to re-upload.
I'm making very slow progress though, it isn't a very intuitive system and has a lack of instructions, and when I do find a tutorial it usually contradicts something else I've already looked at. Here's what I have managed to get so far: