Hello, I'm confused. I can see that there are advantages (especially in hot climates) of Deep Water Cultures but, I'm unsure of how they work. As I see it, there are two types of bacteria on the growing gravel that changes the ammonia to the nitrites and Nitrates. My question I guess is " What changes the ammonia if there are no rocks"? Am I right on anything yet? I'm sure that the problems I am encountering is the balance of fish to water to grow beds.
I have found that using shellrock as a medium is not good. You need a IV drip of muriatic acid just to keep the ph balanced. I need to change the medium.