I couldn't be happier with the waveline with it's higher head pressure rating compared to other (affordable) internal AC or DC pumps out there.
Adding on now to what I started to put together before.
So lets see some form of percentage of the ratio between cups dry produced vs wattage vs. air draw used
Aquamaxx Em 300
vs. wattage used: 3.2% "efficiency"
vs. air draw: 2.6% "performance"
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MTC MVX with Mag18 and MVX stock 684 mazzei venturi
vs. wattage used: 4.8% "efficiency"
vs. air draw: 25% "performance"
MTC MVX with Mag18 and 784 mazzei
vs. wattage used: 4.5% "efficiency"
vs. air draw: 21.4% "performance"
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Waveline DC 12000 @ Level 8 w/ 684 mazzei
vs. wattage used: 3.5% "efficiency"
vs. air draw: 22.2% "performance"
Waveline DC 12000 @ Level 9 w/ 684 mazzei
vs. wattage used: 4.7% "efficiency"
vs. air draw: 27.3% "performance"
Waveline DC 12000 @ Level 10 w/ 684 mazzei
vs. wattage used: 4.2% "efficiency"
vs. air draw: 25% "performance"
Waveline DC 12000 @ Level 11 w/ 684 mazzei
vs. wattage used: 3.7% "efficiency"
vs. air draw: 22% "performance"
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Waveline DC 12000 @ Level 8 w/ 784 mazzei
vs. wattage used: 2.6% "efficiency"
vs. air draw: 13.6% "performance"
Waveline DC 12000 @ Level 9 w/ 784mazzei
vs. wattage used: 4.2% "efficiency"
vs. air draw: 25% "performance"
Waveline DC 12000 @ Level 10 w/ 784mazzei
vs. wattage used: 4.2% "efficiency"
vs. air draw: 25% "performance"
Waveline DC 12000 @ Level 11 w/ 784 mazzei
vs. wattage used: 4% "efficiency"
vs. air draw: 23% "performance"
This is all fully assuming that the skimmate production would be exactly the same time after time at each of those levels. Which it's been really pretty steady but I'm sure what pulls 6 cups per day one time might pull 5.5 cups per day and reverse. But I don't see something pulling 3 cups per day gaining that much ground or reverse.
So, my totally unscientific conclusion which is most likely wrong is:
Waveline DC 12000 @ level 9 with the stock 684 mazzei is the winner for highest performance ratio of cups produced to air draw.
Mag 1800 with the stock 684 mazzei is the winnder for highest efficiency ratio of cups produced to wattage used
If looking for as much air draw as possible to say for aeration purposes the Waveline DC 12000 @ level 11 w/ the 784 mazzei is the winner.
If looking for a pump that runs cooler that will still produce something you'd be happy with then the Mag 18 w/ 784 venture. (produced about the same amount of skimmate as with the 684 but it was dryer so could produce more wetter.)
Definitely some unexpected results as I figured the waveline with the 784 was going to really kick the 684's butt. But, what I think is happening, the waveline handled the head height so well the more restricted 684 didn't hurt it at all. The 784 did help the mag18 that doesn't have near the head height rating. In fact I think the 684 may have produced a finer bubble with the waveline vs. with the 784.
and in the end YMMV
There's more I plan to play around with on this skimmer but going to take a break from it for a bit and get back to some other things like my saltmix parameter testing and thread.