diy over flow is not working..

  • We are currently upgrading MFK. thanks! -neo
S

scottswald

Feeder Fish
MFK Member
Feb 6, 2010
496
1
0
blyth, newcastle, england
my diy over flow is working really bad.

it is 3/4 inch and only 1/10th of the pipe is only full

the pump is only pumping about 300 litres per hour and it cant even nearly keep up

however, to prime it i am simply blocking the overfllow vent and sucking the end to create a syphon, then unblock the vent.

what can be used as "G" in the second diagram on this page?
http://www.monsterfishkeepers.com/forums/showthread.php?t=219465

please help!!!!
 
It is a vacuum check valve (see below) Found this one at U.S. Plastics. ou will use this to get all the air out of the overflow.

Hope this helps.

Bear

check valve.jpg
 
john73738;3990292; said:
It is a vacuum check valve (see below) Found this one at U.S. Plastics. ou will use this to get all the air out of the overflow.

Hope this helps.

Bear
Click to expand...

so i just twist it and it closes or something?

how do i attach this to the pipe at the top of the loop?
 
scottswald;3990313; said:
so i just twist it and it closes or something?

how do i attach this to the pipe at the top of the loop?
Click to expand...

It is a one-way valve. That way you can suck air out without letting it back in.

Mine is glued in place with epoxy resin, but a lot of people use silicone sealant so that they can replace it if it malfunctions.
 
cypher1024;3990514; said:
It is a one-way valve. That way you can suck air out without letting it back in.

Mine in glued in place with epoxy resin, but a lot of people use silicone sealant so that they can replace it if it malfunctions.
Click to expand...


Exactly.
 
ah ok, i understand, i will try that but i have a feeling that my over flow is just plain wrong and will never work... this is so frustrating and has actually become upsetting... :-(
 
i'll post pics tonite....

well, to be honest my whole diy sump looks horrible, it is slightly noisy, and if i was gonna pay for for a new of i think id rather get a normal filter....

and it's only for a 100l tank!!!!

i'm on a very small buget tho...... :-(
 
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