My wet/dry....how it works. (nsf56k)

  • We are currently upgrading MFK. thanks! -neo
the overflow rate matches the return rate. The valves can help you controll it....if the sump fills up too much then slow the overflow or open the return, if the sump gets too low, close the pump side down a little or open the overflow....mine equals its self out though.
 
Checkvalves are not surefire. I have heard of lots of checkvalves failing when they were needed most. I would definitely recommend ensuring that the sump is big enough to hold all of the water that will drain out of the tank should power fail.

Quick thought on the backsiphonage issue... cant ya just put a small hole just below your overflow level in the return line so that it breaks the siphon when the level drops ? Then at most ya loose just a inch or so below yur overflow lvl. and of course whats in yur return line.:)
 
Rallysman: great set up. A question fo ryou. You noted in one of your responss that:

"I could add more water but then the bioballs would be submursed and no longer effective"

Are submersed bio balls INeffective bio filters or just LESS effective than when their not submersed? I'm curious because I run a few Eheims filled with bio balls and all seems to be well, but maybe I'm missing something. Thanks.

GBG
 
They will still house bacteria, but they're not good for oxygen transfer submersed. I should have said they would be LESS effective :grinyes:
sorry about that :thumbsup:
 
did you build that fish tank your self?
nope, someone else built it, and thats part of the reason that it had a rock go through it (epoxy on the inside cracked and the wood started soaking up water)
 
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