shutup

[karazy]

ok, so as i keep getting ever so close to plumbing, I'm just wondering, how do you make some sort of contraption to keep a drilled tank quite?(drilled in the back, not the bottom) i was thinking like a durso or some other online things ive seen for HOB overflow boxes but just on an elbow. also, how much splashing noise does the water going from the tank into the sump make, and how do you make it less noisy?

I'm trying to make my tank as quiet as humanly possible since it will be in my room.

[Matt]

I wrote a reply, but then edited it, because of questions in my own mind. How many drains? What size, what flow? Do you have an external overflow? How big, deep?

[mark]

Since you haven't added water now's your chance to consider a Herbie. Just needs one extra drain compared to Durso, Stockman etc. and since Herbie doesn't draw air, no gurgling or splashing in the sump.

I've heard or rather didn't two high flow setups (one 1900gph other 2000g) and loudest thing was the return pump, nothing from the plumbing. Where you might get some noise is the drop from the overflow lip into the chamber but can adjust standpipe to get that though.

[fishytime]

"Herbie" is silent.

[slakker]

I think avoiding 90 elbows in favour of 2x45 helps minimize noise especially in the vertical runs. I made my own durso style and being able to adjust the height of it helps as well...

[karazy]

ok, my plumbing will probably be 1" so about 300gph i estimate.

and i will look into this herbie. thanks for the replies

[fishytime]

Have a look at the first couple pages of my thread in the journal section. Lots of pics and if there is some thing else you need to see let me know. One thing is you will need another hole to do a herbie style overflow.

[outtafocus]

Any one have a diagram of a "herbie"? I haven't of this and I am interested.

[karazy]

ok, so basically what im getting is that you make 2 holes, and connect PVC to one and then some sort of flex tube or more PVC, and make sure one elbow or whatever you use is above the water line for emergency use, and you put a gate valve on the PVC and adjust it until there is no sound

[mark]

Simply, a Herbie is nothing more than two standpipes in a overflow chamber, one higher (secondary or emergency) than the other and the lower one (primary) having a valve on the drain line just above the sump.

The valve is closed until the water flowing into the primary is over the top of the standpipe and not drawing air. The secondary is higher than this water level and is normally dry. Purpose of the secondary is since the primary is already restricted and backing up water, if the was to become more blocked it would overflow the tank, the secondary prevents this. Often the primary drain output is a little below the water level in the sump, the secondary just above. If you start hearing water splashing from the secondary, it indicates the primary needs to adjusted or has gotten a blockage. Combined with a ATO they are set and forget though.

The huge RC Herbie thread

Also check out Reefjunkie non-traditional Herbie layout here