How much nori is too much?

[naesco]

You are doing just fine, Phreezee
Good to see you feed your tangs 3 times a day as they are grazers and eat all the time in the wild.
If you want to vary the veggies, I would suggest Wardley spirulina discs rather that a flake food (unless it is spirulina).
The discs are hard and they fall to bottom of the tank.
Tangs love them