and

Caz I just bought the left one and realize it's "sinking wafer" not "algae wafer"

dun like to waste money for another pack. but If it totally not the same, I'd better buy new one.

I think Sinking Wafer is supposedly for cories & such, and the Algae Wafers are for plecos, but goldies will eat both

yeah they just eat them all.

their poo were kinda green, is this successful for veggie consuming ?

Green poo means ur goldie ate green stuff, so yes that means ur goldies absolutely devoured those wafers

Yep, goldie poo is supposed to be the same color as what they eat so green food would equal green poo