Our opinion
We heard great comments from our friends about this pump and our expectations weren’t led down. The pump is perfect and keeps its promises, and this detail is very rare, because the result of our practical test often don’t match the declared data. But not in this case.
These conclusions will be really full of material since we’ll do a comparison with similar pumps we have tested before!
The comparison with other pumps
The comparison with the other pumps we’ve tested is very interesting. In particular, we’re comparing the data of Eheim, Hydor, Tunze, Sicce, Corallinea, Waveline and Ecotech Marine, all here below in the chart. These pumps have also their dedicated review.
We ordered the chart basing on the reference value of the pump, that is the product of the flow rate times the head divided by 2. In this way we obtain the subtended area. We believe this is the only way to compare homologous pumps. If the reference value differs too much we think they can’t be compared.
| Pump | Hydraulic head | Flow rate | Reference value | Power consumption | Price | Efficiency | Economic efficiency | Annual cost |
| Eheim 1250 | 195 cm | 1205 l/h | 1175 | 23.8 w | 98 € | 50,6 l/h*w | 12,3 l/h*€ | 56 € |
| Newa Jet 1700 | 200 cm | 1638 l/h | 1638 | 31,2 w | 43 € | 52,5 l/h*w | 38 l/h*€ | 74 € |
| ASF NewJet DC 2000 | 290 cm | 1770 l/h | 2566 | 25,2 w | 99 € | 70,2 l/h*w | 17,9 l/h*€ | 60 € |
| Sicce Syncra 3 | 296 cm | 2375 l/h | 3515 | 42,3 w | 100 € | 56,1 l/h*w | 23,7 l/h*€ | 100 € |
| Rossmont Riser RX 3200 | 281 cm | 2766 l/h | 3886 | 53,7 w | 115 € | 51,5 l/h*w | 24 l/h*€ | 127 € |
| Eheim 1260 | 350 cm | 2434 l/h | 4260 | 62,1 w | 155 € | 32,2 l/h*w | 15,7 l/h*€ | 147 € |
| Tunze 1073.50 | 436 cm | 2143 l/h | 4672 | 38,8 w | 180 € | 55,2 l/h*w | 11,9 l/h*€ | 92 € |
| Sicce Syncra 4 | 380 cm | 3709 l/h | 7047 | 94 w | 160 € | 39,5 l/h*w | 23,2 l/h*€ | 222 € |
| Corallinea BQ5000 | 404 cm | 3504 l/h | 7078 | 83,2 w | 120 € | 42,1 l/h*w | 29,2 l/h*€ | 197 € |
| Rossmont Riser RX 5000 | 364 cm | 4128 l/h | 7513 | 83,7 w | 145 € | 49,3 l/h*w | 28,5 l/h*€ | 198 € |
| Waveline DC6000 | 392 cm | 4008 l/h | 7857 | 50,2 w | 283 € | 79,7 l/h*w | 14,1 l/h*€ | 119 € |
| Hydor Seltz D6000 | 450 cm | 4194 l/h | 9437 | 53 w | 125 € | 79,1 l/h*w | 33,5 l/h*€ | 125 € |
| Ecotech Marine Vectra M1 | 610 cm | 4944 l/h | 15080 | 89.5 w | 399 € | 55,1 l/h*w | 12,3 l/h*€ | 212 € |
You can see from the chart that economically speaking, that is the rate per euro, the ASF is in the average of the most convenient pumps. But for what regards the technical efficiency, considering only the maximum values, this NewJet DC 2000 is among the best performers. Only the Waveline DC6000 and the Hydor Seltz D6000 are more efficient, but they also have very different flow rates so they can’t be easily compared. So if the couple of values that you need match, or at least are similar to this pump now you don’t have any excuse! Moreover, it’s ad adjustable pump, what more do you want?
The relationship with the declared data
Now let’s see the closeness to the data declared by the manufacturer.
Hydraulic head
| pump | hydraulic head | Measure | Gap |
| ASF New Jet DC 2000 | 290 cm | 290 cm | 0 % |
The measure of the head is the same as declared. The Newa keeps its promise.
Flow rate
| pump | hydraulic head | Lab measure | Gap |
| ASF New Jet DC 2000 | 2.150 l/h | 1.770 l/h | – 18 % |
The gap between measured and declared rate is close to 18%, a very few times we reached so close to the declared data. Chapeau! Also because often the gap is up to 40%.
Power consumption
| pump | Power consumption | Lab measure | Gap |
| ASF New Jet DC 2000 | 23 w | 25,2 w | + 9,5 % |
The power consumption is higher than 10% more or less. Considering the conditions of the test, I’d say that’s another value in line with what declared.
Closeness to the declared data
Finally we can assign a value of the correspondance with the data declared by the manufacturer for what concerns rate, head and consumption.
| pump | Hydraulic head | Flow rate | Consumption | Final Value (absolute value) |
| ASF New Jet DC 2000 | 100 % | 82% | 90,5 % | 90,8 % |
If you want to know if this pump suits your needs, basing on the head that you have in your aquarium, I suggest you to check out these articles:
The latter will show you the estimated flow rate basing on your own conditions.
Why declared and measured value of the flow rate never match
You always ask why we always underline that the rate performances of a pump doesn’t match the declared values. In laboratory conditions, such as the ones that companies use for testing their own pumps, you are in the perfect ideal condition, which is pretty different from the real one. Usually, you use a meter directly keyed to the outlet of the pump, thus avoiding chokes, load pressure drops and frictions. A series of things that obviously happen in real life, therefore in our test. And this leads then to a difference that can be incredibly significant with pumps with a high flow rate. So, if you take a pump of 5.000 l/h consider that, if you are lucky, they will be about 4.000, and there are also the problems listed before and that you find discussed in the links above.
Conclusions
The reference value of the NewJet DC 2000 is 2.566 l*m/h, where the declared reference value is 3.118, and a small gap of 18%. Remember that the reference value is the area subtended by the values of head and rate. The calculation is (head x rate)/2.
The loss 18% actually represents a very great value given the fact that the other competitors do worse.
In order to use a pump in our aquarium we always have to consider what it actually express, and not what it should. But in this case the values are practically identical. An incredible result that can be decisive for your choice.
PROS
Great performances and coincident with the declared data compared to the category
Very well built
Silent
Modulable on 12 steps
CONS
Nothing to report!
Disclaimer: Thanks to Aquarium Systems for providing us with the ASF NewJet DC 2000 pump for this review.
