Oh, I don't doubt you get wicked flow out of a closed loop using a Dart pump.
But the flip side is, at 0' of head the Dart is pushing out 3600gpm and consuming 180watts to do so.
A single Tunze 6101 is capable of pushing 3000gph and consumes 36w. So you can have 5 Tunzes before you have the same electrical draw as the Dart.
Of course the flip side is that 5 Tunzes will set you back $1500.
Unless you find them used or something like that.
But a more realistic setup is maybe 2 or 3. So let's say 3 Tunzes versus 1 Dart.
Dart: $240
OM-4way: Holy crap, $390?? For real? (Based on this page here:
http://www.oceansmotions.com/store/p...f071a68a786482 )
180W @ 24hours/day @ $.14/kWh (based on my last month's utility bill once all the extra surcharges and crap are all added in) - $18ish per month
Tunzes: TS24 kit, ... Holy crap again, $1000? Man have the prices on stuff gone up! I paid $800 for mine!!!!
Extra 6101: $435
36W * 3 @ 24 hours/day = $11ish per month
So over a 5 year period (assuming flatline power rates, haha, as if
), total cost of ownership is in the ballpark of:
Dart - $1710
Tunze - $2060
Far out, I just completely deflated my argument. Pop! Psssshhhhhhhhhhhhewwwwwww!!
(sound of balloon deflating)
I .. uh, I had no idea the cost on these things had gone up so much. That's just crazy! I think I paid $300 per my two Tunzes (J&L Boxing Day sales one year apart) and $200 for the multicontroller. The current pricing on them is out of this world!