big bass,i've used liquid every time,i do think next time i will try the granule type.i have been told it works a little longer than the liquid.i did not use anything to eat the decaying algae,this has not been a problem for me.my lake is a little over 5 acres and i normally do half the pond and wait about 5-7 days then hit the other half.first time i used liquid i did the entire pond at one time,i have since been told not to do all the pond at one time.