can someone give me advice on setting up a herbie overflow

[megs_clark]

Hi sean thanks for the tip. Im thinking im going to get my other half to do the cutting so am making a list of tips for him. I think he will do a few practic runs and will deffinitly get him to try that. It sounds like thats a tricky part. Getting the bit to stay at first. And Fishytime, great tank. Im only half way through your thread and it looks amazing!