SeaClear Systems II 75gal acrylic - Return Pump Recommendations

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dookietank650

Feeder Fish
MFK Member
Jan 27, 2010
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Hi all,
I haven't started a thread in awhile but here goes...

I am looking for a new pump/powerhead to return water from the back of the tank to the front. The pump i am currently using is a maxi-jet 1200 which pumps ~290gph from what i remember.

I am looking for a new pump that will fit into the small space seaclear provides, that outpumps the maxijet 1200. It is VERY difficult to give dimensions of the space as it is not rectangular or square, but kind of a tear drop shape if that makes since... If the length of the pump is less than 4.5" it can be up to 4" wide... However, if the pump is over 4.5" it can be no wider than 3.5"...

the maxijet Dimensions are: 3.5" L x 2" W x 3.25" H

The only option I've found that may work is ViaAqua Powerhead VA1300.
dimensions are 4-1/4" x 2-1/4" x 2-3/4"
and pumps 370 gph with max head of 6ft


I have a SeaClear Systems II 75 gallon acrylic aquarium.

For anyone who doesn't know about these, SeaClear made an all-in-one aquarium. There is a sectioned off area (approx. 8 gallons?) in the rear of the tank for 5 gallons of bioballs, spaces for heaters, UV filters, media bags, pre filters, you name it.

Ever since I bought the tank I have been using a maxijet 1200 as a return pump for the tank. There must be a pump used to return the water from the sectioned off back area to the front of the tank. It pumps from a small chamber, up 1 foot back into the tank through a nozzle fitting. So it must pump against approx. 12"-16" of head.


The reason I want a new pump is simply to increase filtration power thru the back seciton. I want more gph to be flowing through my bioballs, prefilters, uv, etc....

So another question I have... is there a gph rate at which bioballs lose filtering performance??

The maxijet is running somewhere around ~260 gph, if I could increase this to 350gph or above and see an increase in filtering performance I would like to do that.

So... any pumps/powerheads you guys recommend that output more than the maxijet 1200 and fit the dimenions of the area??

YOu may now be able to see why I've never upgraded the pump... the research is confusing, seaclear really doesn't provide much recommendation help, and its difficult for me to find pumps that meet the size and output specifications, without knowing how high of a flow rate to have to maximize bioballs.

If it helps, I also have a koralia 2 in the front of my tank pushing water around.

Sorry for a confusing post!
 
I use a quietone 3000 on my 75 gallon. According to marinedepot.com the dimensions are 4.25" x 3.75" x 4"

They also have a 2200 model.
 
FSM;4653806; said:
I use a quietone 3000 on my 75 gallon. According to marinedepot.com the dimensions are 4.25" x 3.75" x 4"

They also have a 2200 model.

Thanks for the quick reply... I am assuming you have a seaclear systems II 75 gallon tank, the same as mine?
 
FSM;4655615; said:
No, it's in a sump.

thanks, could you give me a little more info on your setup?
How big is your sump?
is it the only filtration you have for your tank?
what size tank is it filtering for?
how much head is that quietone pumping against?

does anyone know proper flow rates for making bioballs most effective? I have about 5 gallons of bioballs for my 75gal tank... what would be a good flow rate for them?
 
Originally your SeaClear System II came with a 350 gph pump so you can use most pumps that will fit in the chamber.

Now if you wanted to increase the flow rate in the tank, depending on how much over the 350 gph you go you might have to increase the size of the return holes (should be L-shaped if I remember correctly). You might also have to increase the slot size for the intake or just lower it some more so the amount of water going to the back panel is increased. It's sort of like a balancing act to get the correct flow all the way round.
 
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