PVC overflow air valve

[Thriller1911]

I have seen a lot of how to's regarding the DIY pvc overflow, but I haven't seen the explicit directions on how to install the air valve. Am I missing something?

 

[Liquidplants]

I don't use one in my setup. I unplug the pump [simulate pwr failure] to use the power for other things once a week at least and i haven't lost suction yet.

But i would assume you just drill a hole and stick it in with a bunch of silicone.

 

[Pharaoh]

yep, just drill a hole and silicone it into the overflow.

 

[Burko]

"I don't use one in my setup."

Yeah same. I coudn't find one so went without, works fine.

 

[smartlove_518]

so if there is no air valve then how will you prime it..i am new to this and want to make one for my tank.

 

[Burko]

"so if there is no air valve then how will you prime it"

I just filled it up...outside with a hose, then placed it in the tank.

It hasn't needed repriming, yet...

 

[smartlove_518]

"so if there is no air valve then how will you prime it"

I just filled it up...outside with a hose, then placed it in the tank.

It hasn't needed repriming, yet...

thats what i want to know..from where do you fill water. do you fill it through the pipe above the T....

 

[smartlove_518]

and is it the T that determines the water level in the tank or the height of the pvc in the tank