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RE: Aquatic Plants Digest V3 #1151
> From: Charley Bay <Charleyb at Cytomation_com>
> Subject: RE: Large tanks & sumps
> It's the same with aquatic gardening... I no
> longer like drilled tanks even though many of
> mine are, and it's imminent that you will get
> a broken siphon with water everywhere (and
> yes, I'm an idiot, I've lost 6" from my 180g
> more than once. Well, actually, more than
> twice. Well, actually... ;-).
I'm a little perplexed how a properly setup overflow system can lose siphon?
About the only possibility I can think of is a skimmer that created air that
could be trapped in the U tube, and even that can be overcome by using two
skimmers so that the flow rate would draw the air out of the second U tube
when the first failed.
Even if that occurred, you can keep the water level in the sumps low enough
that a complete lack of water return wouldn't overflow the tank before the
pumps drew air. I've never lost siphon in either U tube, let alone both, in
8 years but I still planned for the possibility.