Yes there is muck, every pond has it in the spring reguardless of the fall clean-up. quote]
oh do i know it?...
the first fall the fence, i put around the pond, pretty much failed

(before i put up the small wall that lines the driveway) and i would clean it every day after work until it became to much... Last summer i made myself a net out of heavy duty netting and 1 1/2 pvc pipe (20" wide, 12"tall with a 15' reach{the net was pretty much the size of a 30gal trash bag}) and dredged the bottom. and let me tell you i was shocked that each pull-up there had to be 50-75lb of muck... i coundn't even lift it out of the water, i had to drag it over the rocks... i had the worst back pain ever(seriously). plus i tried to use a old pool pump

to siphon the bottom, but that was nearly impossable, since pool pumps need to be below water level and it kept clogging...