It may of been coincidence, but I trapped out, maybe, a couple hundred 4-5" crawdads out of my 1/4 acre pond last year and saw an imeadiate increase in visibility. My pond struggles with turbidity and I have no cats or carp to add to the problem. Do not underestimate the crawdad when it comes to muddying up the waters. Throw a trap out and see how many you get in a 24 our period. I could get 50 overnight if the trap was set in 2-3 foot of water. That's what told me I had too many. I use pellet fish food for bait twist tied in a sock.
I side thought...could you pump the pond empty and expect a quick refill from the spring? Start over in other words.
