my local garden center sells specilized pond ferts for $10 a bag. it
contains 10 tabs which obvious don't last long. in the plants they
sells i see regular tiny marble sized ferts. this is what i intend to
use this season because i can by a 10lb bag of that stuff for $10.

what should i get? i'm guessing a 10-10-10 mix with all the micro's.
any recomendations on which brand? should it be water soluable or not?

thanks.