Aviel wrote: > Now when Karen is describing the amazon water then it's a different story - If I understand correctly - it is either deeper or browner... > > So depth isn't such a big factor putting aside reflections, shading, etc. Yes, while depth can certainly be an issue too... at some times of year, and in some places it can be 40 ft deep. But absolutely NO plants grow in those areas. The bigger issue is the color of the water in black water areas, and the opacity in white water areas. In some clear water areas, there is a tremendous amount of plant life at depths that far exceed anything we could achieve in an aquarium... but there is much more light there too! Karen ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe aga-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/aga-member/