DC Controllable Pumps vs AC Pumps

d2mini said:
Dang.
The numbers on those Deepwater pumps are pretty astounding compared to the Vectras.
Are they accurate?
The body of the pump looks identical.
But the outlet is 1.5" vs 1".
And I'd still be taking it down to 3/4" and 1/2" by the time it hit my returns.
Click to expand...

From what I understand the Deepwater Aquatic pumps are not Jebao modified and rebranded like the waveline. Which I'm a big fan of my waveline but it is what it is.

I believe Klaus chimed in on a thread on this as well once talking about them being German made but I could be wrong about the location part. I know he chimed in to back them up.

Other then that I can only go by what's listed.

Personally, I think the Abyzz is the best bet for an internal pump (in your application and flow requirements) and believe their ratings.
 
Here's somewhat around to what to expect with the Abyzz A200

I made some major assumptions with your plumbing. The dolphin aqua sea 4700 has about the same flow rate but less head pressure but the calculator wont let me go less the .75" plumbing so I added in a few extra fittings possibly...

10889a0cb215d4a841f09fd21dd852ec.jpg



I'll see if I can find something closer but I would imagine you'll hit 1000gph if wanted.
 
Unfortunately the Abyzz is off the table at that price point.
I could buy a case of Vectras. lol
 
d2mini said:
Unfortunately the Abyzz is off the table at that price point.
I could buy a case of Vectras. lol
Click to expand...
Then how bout dat Jebao... lol

It's listed as 30' head but lets say it's more likely 20' then that would equal that chart above.

Both about 4700gph and 20' head assuming the jebao is less then listed by 10'

Relatively cheap test. Its in Stock on amazon right now. I just ordered one to try out on my skimmer. [emoji1]
 
haha, out of that list, the DeepWater ones look great.
Good price and insane flow at 15' head pressure compared to the vectra.
Of course what it would do with my plumbing is probably another story. lol
My lfs carries them.
The 10 is the largest they have in stock but can get them in a few days.
 
The outlet piping would require 1.5" to get the listed flow.


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scuzy said:
The outlet piping would require 1.5" to get the listed flow.


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Click to expand...

Correct.
The real question is, if we plumbed the Deepwater pump into my system, would it provide more flow than the Vectra, being it was designed with a 1.5" outlet vs the 1" outlet of the Vectra?

Inquiring minds want to know!
 
d2mini said:
Dang.
The numbers on those Deepwater pumps are pretty astounding compared to the Vectras.
Are they accurate?
The body of the pump looks identical.
But the outlet is 1.5" vs 1".
And I'd still be taking it down to 3/4" and 1/2" by the time it hit my returns.
Click to expand...

Be aware of their specs.
 
Going by google images, the Deepwater pumps do have a more pressure friendly looking impeller design, so while the rest may be made in the same factory as the rest of the similar pumps that part is unique. It could explain why they have a curve like that (or their graphic designed just drew it...)

The Deepwater one is shrouded and appears skinnier than the same size Jebao DC/DCT ones, which are all open. The new DCS ones seem to be skinnier and closed.

The Vectra impeller confuses me. It seems just... bad. It appears skinny and closed, but then there is a propeller of sorts tacked on to the front, and i don't see the opening to the center of the impeller at all. Strange thing.
 
scuzy said:
Also current USA has some DC pumps out as well.


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Click to expand...
They are getting fancy in how all their products link together. A LFS by me carries those. Nice looking.

But not enough head height.
 
scuzy said:
Also current USA has some DC pumps out as well.


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Click to expand...



I just installed one on my 100g tank. It's only been a few months, but so far, so good. Dry quiet as you would expect for a DC pump.
 
Just FYI, I now have the Ecotech thread to slip adapter I was waiting for so I'll be finishing this up a little later today.
What I didn't realize (or completely forgot about) is the actual output of the L1 is 1.5", which is what this white adapter is. It just converts the british threads to 1.5" slip.
The blue coupling I was using is 1", so I was thinking the pump output was 1", and that's what they list on their website in the specs.
Now I want to know what that flow chart is based off of... the 1.5" outlet or 1" outlet (with blue coupling).

So I had to buy a 1-1/2" to 1" bushing to match up with the rest of my plumbing.

I don't know if there would be much difference in running 1.5" plumbing from the pump to the overflow, since once I get to the overflow I have to convert down to 3/4" anyway.

Anyway, I'll report back later today with any improvement I see from getting rid of these last few barbs connectors.
 
Dennis, from what I have gathered it is best to keep the outlet size or even larger, for as long as possible before any reduction.
 
Vinny Kreyling said:
Dennis, from what I have gathered it is best to keep the outlet size or even larger, for as long as possible before any reduction.
Click to expand...

Yup, me too.
But how much do we gain?
In my case, if it's like 10 gph... not really worth the cost of all that plumbing. :p
 
I was once told --hobbies are meant to be tinkered with -- so we will always be busy with something. AND something usually costs money.
 
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