shut off valve

[eli@fijireefrock.com]

If you are setting up a Herbie overflow you are going to need a shutoff valve, to regulate the water in your overflow box,

[globaldesigns]

I have valves on every line, you never know when you are going to need them. Easier to do it when setting up, rather than trying to add later.

[mark]

not really needed on the drain.

For pumps, handy a valve on both sides.

[eli@fijireefrock.com]

Originally Posted by globaldesigns

I have valves on every line, you never know when you are going to need them. Easier to do it when setting up, rather than trying to add later.

I will have to agree because i do have a valve on all my lines.
only because its an inwall tank,otherwise i wouldn't.