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#1
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![]() From first hand experience have to disagree that a modified Herbie is a problem waiting to happen. Mine's been up since last October, water in the 2nd chamber can't be that bad as snails don't seem to find it a problem. As for sediment, what's in the overflow is what's left from when I pulled out the Durso. If it was a problem guess I could just siphon out when I did a water change.
Idea for the emergency being a Durso is interesting but since I'll need to worry about flooding at 2000gph if the primary became blocked, I'd be reluctant having the emergency standpipe anything other than a open pipe. Drain size, here's a calculator for a guide, (towards bottom). 1.5" should be able to handle a Dart.
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my tank |
#2
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![]() Maybe I'll start with a durso or stockman setup first and if that's not quiet enough, try something else?
Beananimal is out, I have single-hole corner chambers. Thanks for the input! -Rob. |
#3
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![]() Quote:
In addition if you setup the Durso properly it will siphon at higher flow rates and extending the downspout to the bottom of the overflow box will actually add head pressure and will be capable of flowing more than a straight pipe that is typically used in a Herbie setup. Plus on top of that using the standpipe will allow more freedom in tuning, if your flow increases or decreases slightly you will not have to adjust the valve like you would on a typical setup. Lastly by sending some water to the second overflow you eliminate the questionable stagnant issue and you get the benefit of more surface skimming by actually using that second overflow for the purpose it was intended for. There really is no downside to this and I've always setup Herbies in this fashion. |
#4
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![]() Main reason I went Herbie was noise from the air in the lines. The display itself with Dursos was near silent but the gurgling finally became enough. Can't see going back.
If was to do over again from the start, would definitely layout for the Herbie the primary and emergency standpipes in the same chamber. I've got an established tank, basement sump and now a finished basement so to either cut out the overflow (then I'd have my return and emergency bulkheads open on the floor of the tank) or to swap my drains with my CL inlet just isn't worth the hassle. To the OP, you're got a dry tank now, enlarging the overflow chambers to accept a second (or 3 bulkhead) to get right from the start, might be something to consider.
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my tank |