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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