Surge device on tank with overflow

[DKKA]

Anyone have a CSD or Bourneman flush on a tank with an overflow? I had a CSD on a previous tank and loved it, but that tank didn't have a sump.

I would love to put a surge device on my next tank, but am worried about the noise and potential flooding when you throw an overflow into the mix.
any experiences?
Thanks, Dan

 

[afss]

no experience, but I would think it would depend on the setup. It won't really effect your sump that much. Bassically what I would think is that as long as your overflow wasn't draining at its max, ie the return from the sump GPH was less than that of the GPH rating of the overflow, then the water that "surged" into the main tank would cause the flow through your overflow to increase. As long as this increase didn't exceed the overflows max GPH then you would be OK.
Scott

Oh yeah remember that you would have to take into account having that extra water above in the surge that could drain to the sump in a power-fail event.
Scott
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Taoism Forum

 

[ADS]

I have a 3g flapper-type surge on a 90g with a cpr overflow rated for 800gph. No problems thus far. This easily handles the surge at 30 sec intervals. The initial bubbling pre-surge is the only sound you can hear. The surge is otherwise pretty quiet. The surge bucket is 24 inches above the tank. Adam

 

[mweber]

I siphon surge 8 gallons at a time out of my 58 gal refugium into my 180 display. this raises the level in the main tank about 3/4" for about 15 seconds every 1.5 min. I have the level in the display set about 1.5" below the top at low tide which still gives me a 3/4" safety margin at high tide. Since the surge tank and air eliminator are in another room the display tank are quiet.

 

[GLD]

I would be very interested in details and/or pictures of the surge devices described above. Thanks

 

[DKKA]

Thanks guys, I guess my main concern is that if I use a Durso standpipe I will wind up getting that sucking sound after the surge as the water drains from the tank to the sump. That would pretty much defeat the purpose of a Durso.
I'm sure it will depend on my flow, and whether I do 2 overflows or one.
Thanks again,
Dan

 

[mweber]

GLD:
Sorry I don't have a digital camera. But it is really simple. I put a 8 gal corner overflow in my 58 which hangs from the ceiling in an unfinished area of my shop. Out of the bottom of the corner I put a 1.5" 180 elbo to turn water up. about 2" below the top of the 58 I put another 180 to turn the water back down. This pipe then feeds into a 12 gal reservoir designed to separate most of the air from the water. I then have a pipe that sends the water out of the bottom of the 12 into the display tank in my office. My office is quiet, but the storeroom has the surge noises. Oh, at the top of the 180 elbo at the top of the 58 refugium is a 3/4 flex line that is piped to the bottom of the overflow to break the siphon when all but 1" of water has left.

 

[dieselboy]

FWIW, two things that made my application a bit easier to manage was to, 1) set a shorter "periodicity" between surges and, 2) set a smaller total surge volume. Velocity would be a set constant, as this would be determined by pipe diameter and bucket height. This way, it would lessen the amount of incoming surge the overflow has to deal with, and retain the original velocity rate, only difference is an increased "surge rate". Hope this kinda makes sense, and HTH.