What else can I do?

[coolhandgoose]

Originally Posted by George

Is that all you feed the tang, every 2 days? no wonder it's a little bit thin. Tang is a grazing machine in the wild and it is constantly searching for food. You should feed it every day and have some kind of algae sheet (nori) or algae block in the tank most of the day for it to graze. I know this will produce a lot of waste but that's a price you pay for keeping tangs. Increase your nutrient exports.

I will definitely up the feeding.