cherubfish pair
New member
A controllable pump for skimmers? To run with the 7096 also?
Will Tunze make a DC hydrofoamer pump?
- Thread starter cherubfish pair
- Start date
We actually did from the late 90's- 2006.
Here is why we stopped:
1) Excessive issues with water damage to the end connectors and power supplies.
2) DC pumps are more technically complicated, they have a shorter expected life span and cost more.
3) The gains in efficiency are minimal
4) Their is no logical need to back up a skimmer with a battery, a few days without a skimmer would not constitute an emergency like a lack of flow.
With that said, we do periodically consider reintroducing such a design but only if it enables a bigger performance in smaller package because the trade offs above still exist. I think the DC craze is largely a fad driven by manufacturers who lack the experience above. A good AC pump will last over a decade with just a couple impellers, a good DC pump might last 5-6 years and that is only if no external electronics get wet and power supplies and impellers are consumable parts needing replacement.
Here is why we stopped:
1) Excessive issues with water damage to the end connectors and power supplies.
2) DC pumps are more technically complicated, they have a shorter expected life span and cost more.
3) The gains in efficiency are minimal
4) Their is no logical need to back up a skimmer with a battery, a few days without a skimmer would not constitute an emergency like a lack of flow.
With that said, we do periodically consider reintroducing such a design but only if it enables a bigger performance in smaller package because the trade offs above still exist. I think the DC craze is largely a fad driven by manufacturers who lack the experience above. A good AC pump will last over a decade with just a couple impellers, a good DC pump might last 5-6 years and that is only if no external electronics get wet and power supplies and impellers are consumable parts needing replacement.
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