When I post,A lot of Details,Response s extreamely limited ,not sure if its laughter ,yawn ,B>S>,or I can do that ,probably ,alittle of all four,I often wonder ,if I'm wasting my time ,po ing people ,to boot,or just talking to myself on line,which is really stupid I already know what I trying to do, All that aside ,The idea is to provide enough current to gentle flush ,affluient ,dust particals from the power plant, fish do ,all non wanted semi floating items to the pumps suction points to go to the filters.In my case a sq. ring slotted at the perimeter 1" off the bottom all slots faceing the drain with good waterflow aided w/venturi air intake suppling loop current and air to continually move unwanted accumulation to the suction point ,then only leaves and lrg. remain to be manually removed ,while proving cross current and added air to the pond.Powered by a separate pump ,controlable use and flow to match needs ,at least it sound good to me ,time and experimentation will tell ,any thoughts?