Have you check your pump volume it maybe coming from poor circulation now that there is more waste in the tank. What's the tank size and pump GPH? A picture might help to, take a look at the clarity of the water in my tank, (look in "Breeding Tilapia help" by dsrtizrd32). Look for Apollo Nov 10, 2013 @ 9:39 pm, you can see the reflection of my flash off the bottom and other items perfectly clear after going though 32" water.