Corywilson...
i tested the new Volute/nozzle Design in 25-28 cm waterlevel (10 " ) the best Performance, for my tank was 900-950 Liter Airintake and the screw was 2,5 Turns out. Please noticed : my saltwater-Testtank.
Please starting for found the best Perormance for your Tank :
> disconnecting the Hoses from the Silencer...
> closed the white srew completed....
> full closed, the waterinjekting is to less and the Pump begining surching and pulsation...
> starting with half Turns and heard, what the Pump is doing...
> after one or one and an half, the surching is stoping and the waterinjektion go higher...
> please opening the screw how long, as Micorbubbles comming out.....
> after Microbubbles comming out, close the screw a little bit..
Thats the best performance for your Tank. Please notice :...after Plugin the new Update, the Time for wait for the new adjustment, is one Day. The first Day, all the Parts are fresh and destroyed the Foam.
For Measurements : .... the Dwyers are not the best Equipment for make a good Measurement. We have any Dwyers here. The Backpressure, of the ball inside the Cone, is to high and the Pipe inside the Cone is to small. So the Measurement is wrong. The Equipment what we use, is an electrical Airflowmeter with 0 % backpressure. This Measurement is exactly.... the diffenrence for cheap Airflowmeters, is possible go wrong 50 % and more.....
For testing a good or bad Airflowmeter : .... please using a wattmeter and look, what the energyconsuption is doing : .... go the wattage more as 2 watt higher, after plug in a Airflowmeter, forget the measurement : ... he go wrong. A good Airflowmeter dont change the energyconsuption. 5 Watt more energyconsuption destroyed the Pumpperformance. The Airflow go significant down and the waterflow go high... If the connectors on the Airflowmeters are smaller, as the Silicontubes, what we using ( 9 mm inside) forget the measurements. A restriceted inlet, destroyed the Pumpperformance. For a Quickmeasurement with Airflowmeters, here in our Factory ( with the orange Cone) have 20 mm (!! ) inlet..... A good Airflowmeter in Europe, cost 200-300.- Euro. A electrical Airflowmeter cost 1500.- Euro....
Thats the Reason, we dont using serial Airflowmeters on our Skimmers.
Hope it helps.....
regards... Klaus