Gen-X - No bubbles!

[JxMetal]

Why don't I have any bubbles with my Gen-X 2400?


Could my air hose be too small? I just used the one off of my sedra 2500. Should I buy a larger tube? The one I put on there was a little tough to fit.

 

[sirreal63]

the venturi on them sucks....blow a little air into it to get it started and it should continue to pull air.

 

[JxMetal]

I did that. still nothing except for the air I blew in there.

 

[JxMetal]

I think the air tube's too small. When I put my hand over the water input I get some gulping out of the venturi.

 

[sirreal63]

it can also be that the pump is too deep in the water to draw air. I have a GenX 1500 and I restrict the air but my venturi isn't stock.

 

[JxMetal]

hmm I guess i'l point the input towards the sueface wand try thhen.

but its only about 4" deep right now

 

[Schplitter]

The ventury inlet has to be at a 90 degree angle from your floor. Directly up. Your pump may be too low in the water and if these pums have problems drawing air as it is then this may well be your problem.

 

[JxMetal]

it is straight up.

can somebody answer this -

can an air tube be too small and therefore the pump draws no air in?

 

[sirreal63]

No, the problem is the venturi isn't creating enough vacuume, you can fix the venturi by restricting the water flow into the pump. There is a long thread on the meshwheel mod where Kent shows how he made is stock venturi work better on the GenX.

 

[JxMetal]

oh god, wish me luck finding that part. :lol:

 

[sirreal63]

in between phone calls I have been searching for it, Iknow it is near the beginning of the thread

 

[kpc01]

when you find it let me know, cause I think I am having a similar problem

 

[sirreal63]

http://reefcentral.com/forums/showthread.php?s=&threadid=966407&perpage=25&pagenumber=1

 

[sirreal63]

an increase in pressure around the venturi causes the suction, if the venturi is too wide and unrestricted the water flow isn't great enough to cause the air to be sucked in, hence your problem.

 

[JxMetal]

why can't gen-x just make a decent plug and go pump? :lol: If I knew it was going to be this much trouble I would've bought something else.

 

[Chelsey]

try it when it isnt connectedto the skimmer

 

[JxMetal]

i did. tomorrow i'll drill a better venturi

 

[JxMetal]

Ok, new venturi installed!

-I just went to Ace and bought a connector(?) it's threaded on one end and is a barbed fitting on the other.
-Drilled a 1/2" hole in the pump input as close as possible to the impeller.
-Took the fitting and grinded down one side of the threaded end so that it's on an angle to block water input.
-Placed the fitting in the 1/2" hole and tapped it in with a hammer.

Wham, bam, thank you ma'am I'm done.

Lots and lots of air going in now.

NEXT QUESTION!

Where can I get a silencer for the air tube? It's got a gurgling sound now.