Amo's Tank thread

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Mike

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Reply #60

If that's the unrestricted pipe, then it's wrong. There shouldn't be any valve on top of it. It's not unrestricted then...

The top of the pipe should just end, above the restricted pipe, but below the weir comb. That way if the main pipe blocks, the water level rises, and the unrestricted pipe takes all the flow. This won't be able to take any flow by the look of it.  :(
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Amo Manik

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Reply #61

I have shut the valve on main return and the durst type emergency pipe does take the over flow into sump,just couldn't work out reason a valve had been put on, I have left the valve fully fully openso it unrestricted

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Reply #62

This is where the water level sits the restricted pipe is just below the durso pipe, there isn't any water going down durso,only if I shut valve on return pipe
Last Edit: Feb 26, 2015 12:47:45 pm by Amo Manik

Mike

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Reply #63

That's just it, Amo, it's twin standpipe. It's superior to a durso setup which is a workaround for only having one downpipe.  You've got two so there should be no durso.

A durso has one downpipe, which will suck down air as it can't be restricted. A durso is a way of making it quieter.

Yours seems to be like this:


Which seems to be an odd combination of the two. I've no idea why this is needed... Maybe someone can enlighten me.  :undecided:
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Amo Manik

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Reply #64

Yes I have two pipes like that as return, the straight pipe is the main return.. all new to me   :embarrassed:

Carol

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Reply #65

Shouldnt it be the one with the valve should not have a valve and be the main pipe eg a durso as its bent like that and the straight one as the opening is higher the overflow  ? Would the valve be to cut down the flow and quieten the  durso?


I just had 2 upright pipes and one was shorter than the other and a valve on the main down outlet into the sump that i used to quieten it.


Tho its most likely my take on it is bollocks  :wink:
Do not mock the snake because it has no horns.For who is to say that one day it may become a dragon,as one just man may become an army...Water Margin.

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Reply #66

I have read through the intructions supplied and for some reason the durso type pipe is used as the emergency pipe, not sure why but have triple checked and also triple checked that if the main pipe blocks the durso takes the overflow and all seems to be working fine, the little air valve just had me confused as couldn't see any use for it

Mike

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Reply #67

The air valve on a durso is what you use to make it quiet. It restricts the rate air can be taken in, but in a twin standpipe setup it's not needed.

I'd leave it wide open, as if the level has risen to the point where the emergency overflow starts taking water, then something has blocked the main drain, and the noise the emergency overflow makes is useful as it alerts you. To try to silence an "alarm" seems odd to me.

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Reply #68

Agree.  Nothing on the emergency,  Just a straigh pipe with nothing one the top or bottom.  This ensures all the water can make it down, and you never flood the DT.  The noise is your warning sign.
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Reply #69

stockfish and corals moved over, just waiting for the siporax to turn up.

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Reply #70

Looking good :cool:
I'm a fan of open scapes where the fish can swim behind structures and you have to bob your head about to see everything  :smiley:
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Carol

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Reply #71

Nice rock arrangement  :smiley:
Do not mock the snake because it has no horns.For who is to say that one day it may become a dragon,as one just man may become an army...Water Margin.

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Amo Manik

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Reply #72

Well came down this morning and found Mr Grumpy(yellow spot goby) laying on tank cover, can only think he managed somehow to squeeze through the gap where return pipe enters tank, gonna need to stick some sponge in their.

carlcall

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Reply #73

Sorry for you loss Amo.....how big is the gap?

Amo Manik

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Reply #74

Was about 1.5cm