Ok, I notice some of the systems have very brown water. Have you experienced this issue???
The brown/yellow water is produced from the plants. The natural decay of matter in the system causes this. The effect is from the tannins released by the plants. You can clear the water up with water changes, just know that you are removing some of the nutrients for your plants when you do this.. I like the natural yellowing effect personally, it looks more like a natural wild scene to me.