The leak comes out from UNDER the tank, so no.Could you wrap the exterior of the tank in light colored tissue paper? It shows moisture quite easily and could help narrow down the location if that is one of your goals. (pretty easy on the wallet too)
The leak is at such a trickle that I doubt that would work.Pete, try ckeckin' with a local pool installer or maintenance company for some water soluble dye. I don't believe it would pose a toxicity issue but certainly investigate. The water has to be near absolute calm when you release the dye for it to work best but you can watch it move to the leak.