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#1
04-12-2006, 03:14 AM
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Ruth,
If one of the two closed loops pump leaked, the water would go directly into the sump, as well the water level would only drain to the first hole drilled on the closed loop which would act as a siphon break. The sump is also drilled with its own overflow so should the water level in the sump rise for any reason it will go straight to a drain in our basement. One of the nifty features of the posidon is that if they run dry they will shut themselves off. I'm not aware the the dart pumps offer a similar mechanism. Heat isn't an issue, the tank will be properly vented and a approximate 4 degrees of heat from pumps would only serve to reduce the workload on the heaters we've installed. It might be an issue had the tank been smaller, but with an approximate water volume of 300g its more of a helping hand then a hinderance. Thanks for the offer of the lights Ruth, but we're going with 3x400w MH. Hope you find a buyer! 
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#2
04-12-2006, 03:48 AM
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looks good man I take it Ed was the one with the grey hair and the beard I knew it...
mike
__________________
180 starfire front, LPS, millipora Doesn't matter how much you have been reading until you take the plunge. You don't know as much as you think.
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#3
04-12-2006, 03:55 AM
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Looks like you have it covered in case of a failure - good thinking - I know that I would not have been nearly as smart and would probably end up with a room full of water. If I ever have to tear my 230 down I am sure going to do things differently to set it back up again. I have 3X400W over mine as well and find it great - I just wish I had supplimented with VHO instead of PC.
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#4
04-12-2006, 06:01 AM
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Nope, Ed has the had and glasses!
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