Quote:
Originally Posted by billdogg
IME, 2 drains is always better than 1, even if #2 stays unused in the same overflow - Murphy is alive and well and lives in YOUR aquarium, just waiting for a chance to flood your house!!!!
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The Herbie style setup already has a dry backup drain just in case. So, in my case, there's no need to have a second overflow box in the tank just for backup.