aerwyk, You are definitely on the right site and do not be upset because someone didn't agree with you. I've been doing Aquaponics for 46 years and I am continuously called on my thinking and experience.After your post, I'm not sure I'm on the right site. You could have enquired as to my bona fides either directly in a post or pm me.
As long as the posts are civil, a heated discussion is the best kind as it brings everyone into the fray.
Come on back and prove your point.