This is exactly how I pump the watermeal and filementous out of my pond. You do not want to pump it directly through a trash pump. I use a 4 inch trash pump to pump water through a venturi which has another 4 inch hose attached for pumping algae and watermeal. I own this equipment for dredging gold out of the creeks around here. Check out the KEENE website. They have all types of suction dredging equipment. I would guess that all of my equipment cost less than 450 bucks including the pump. The trash pump has a a screen on the inlet hose and you can not pump course vegetation through it. I will get some pics of my equipment posted shortly.
