I'm not an expert, but I'm pretty sure ultra-clear water could be an issue (you say you have 9 foot visibility, is that corret?). Generally speaking, fertile water often has a green tint to it. Fertile water is crucial for newly hatched fry, since they feed on those microscopic organisms that turn your water green. Also, clear water makes it hard for predators to sneak up on their prey.


"In the age of information, ignorance is a choice." - Donny Miller