ya we are going to lock the boas in... cause they are naughty snakes - and after reading your post... sounds like routing a channel for the flex is the way to go! i like the idea of not drilling the tanks.

now... another question. how long of a piece of flex watt do you put on each shelf? do you put it from the back towards the front or do you go side to side? i've been thinking side to side would be better but it may use too much flex watt.