It's still better to get those seaweeds specially made for marine fishes, twolittlefish is a good brand, with all types of seaweeds, red, purple, green, mix. I tried feeding with those seaweeds yong tau foo uses, they are too hard for the fishes to tear apart, if we were to shred for them, it will be until tomorrow. For the red bamboo, it will be best to buy 2 or 3 of them, put one into the main tank, once the tangs about to finish them, remove them and put it into the sump, make sure some bamboo is still around, if not they won't grow back. With the constant rotating, we can save a lot of $$, hee. But of cas, if you have a lot of algae eater, then the rate that the fishes finish the algaes would be faster than the rate the algaes can grow back. I tried lots of ways to make a tang fat fat, the best way is still feeding them with algaes/seaweeds, they faten up instantly. Hahaha The clips pls don't get from stationery shop, they contain metal material, buy i from fish shop, almost all fish shop have it, one or maybe two clips cost around $7 to $8.