WTB: Mag 9.5

[FlipFlops24/7]

the mag 7 isn't putting out enough flow in my new tank. I was thinking the 9.5 should be a decent step up. Let me know if you have one for sale.

Thanks

 

[jmkarcz]

take off the loc-line, leave the bulkheads wide open, then re-evaluate.

J

 

[FlipFlops24/7]

arrrrrrrrrrrrr.....that loc-line wasn't cheap

I'll try it tonight when I get home.

I had to use a 90 elbow because of the way the stand is built, and that I'm using a 29g high as my sump. Do 90's really take away that much flow?

 

[jmkarcz]

No. It's not, but it does restrict flow

So does the squid for that matter

Ues the flow / head calculator on the home page at rc.com

try both ways

 

[RCS]

Not sure how much room you've got, but I've got a Sen900 around somewhere I can let you have cheap ($40?). Rated @ 900gph @ 3ft of head. Only used it for a couple of weeks before stepping up to the T-4 Velocity pumps.

http://www.wonbrothers.com/product/pumps/gapumps.htm#sen900ga

If you want to try it and it doesn't work, I'll take it back too!

 

[yaitisme]

Cheaper than a Mag 9.5?

Here's a good article for you:
http://www.aquariumpros.com/articles/headpress.shtml

Depends on the 90, all 90s will restrict flow, some will restrict less than others depends on the design. You can also cheat a bit and use two 45 degree fittings to help smooth the flow while still making a 90 degree turn.

 

[FlipFlops24/7]

<a href=showthread.php?s=&postid=8726761#post8726761 target=_blank>Originally posted</a> by RCS
Not sure how much room you've got, but I've got a Sen900 around somewhere I can let you have cheap ($40?). Rated @ 900gph @ 3ft of head. Only used it for a couple of weeks before stepping up to the T-4 Velocity pumps.

http://www.wonbrothers.com/product/pumps/gapumps.htm#sen900ga

If you want to try it and it doesn't work, I'll take it back too!

Thanks. I'll check my sump when I get home and see if I have room for a pump like that.

 

[jmkarcz]

Before you get all bent out of shape, remove those loc-line pcs and evaluate the raw flow... if it's better, maybe just add a set of eductors...

For reference, you have a 40 gallon system, and your pump specs at...
' gal
0 700
1 650
2 550
3 500
4 480
5 420
6 400
7 350


You can't be worse than 4-5' there so that puts you about 480-420 gallons... so, lets say 450 for numbers... 11.25 times per hour.

You could increase it... but why not sit back and see what you have run for a bit.



J

 

[FlipFlops24/7]

<a href=showthread.php?s=&postid=8728594#post8728594 target=_blank>Originally posted</a> by jmkarcz
Before you get all bent out of shape, remove those loc-line pcs and evaluate the raw flow... if it's better, maybe just add a set of eductors...

For reference, you have a 40 gallon system, and your pump specs at...
' gal
0 700
1 650
2 550
3 500
4 480
5 420
6 400
7 350


You can't be worse than 4-5' there so that puts you about 480-420 gallons... so, lets say 450 for numbers... 11.25 times per hour.

You could increase it... but why not sit back and see what you have run for a bit.



J

I'm just use to the flow of powerheads. I'll see how things go. I'm definitely not bent out of shape about it. Just figured I would see more flow than I am.

What are eductors?

 

[yaitisme]

'Water jet eductors utilize the kinetic energy of one liquid to cause the flow of another. Eductors consist of a converging nozzle, a body and a diffuser and resemble syphons in appearance. In operation, the pressure energy of the motive liquid is converted to velocity energy by the converging nozzle. The high velocity liquid flow then entrains the suction liquid. Complete mixing of the motive and suction is performed in the body and diffuser section. The mixture of liquids is then converted back to an intermediate pressure after passing through the diffuser.'

Or magical flow increasers with min. head pressure.

 

[yaitisme]

I agree with jm, you may just be on the hairy edge of tweaking your system in. Remove the obvious obstructions first and see how the system reacts.

Post some pics of what you have so far.

What diameter and type of PVC are you using?

 

[yaitisme]

... or you can go ahead and buy the 9.5 and give me a sweet deal on your slightly used 7!

 

[yaitisme]

Dam, three consecutive posts only count towards one on my post count~

 

[RCS]

Eductors are wonderful things, but remember they should be used with a high-pressure pump as they add quite a bit of head on their own.

 

[FlipFlops24/7]

who makes these magical eductors? Don't say Tunze or I'll smack you :-D

 

[jmkarcz]

Me,

and for 6$ total

And Scott.... Impressive Four-Way there.

 

[FlipFlops24/7]

<a href=showthread.php?s=&postid=8730122#post8730122 target=_blank>Originally posted</a> by jmkarcz
Me,

and for 6$ total

And Scott.... Impressive Four-Way there.

Oh is that what you have on your 75? Those work awesome on your tank. Would I need ones that large?

 

[RCS]

These are the ones I use: http://www.kthsales.com/website/Misc/hello_salt_water_enthusiasts.htm

 

[jmkarcz]

I think size affects overall functionality, but if you want to try to make them smaller... we could. How did that work with removing the LL?

If that got better, this is the direction to go. At least for now.

J

 

[FlipFlops24/7]

removed LL, flow is still puny