In a few weeks I plan on buying some Flora Max or Flourite and adding it to my Aquarium. I have plants in the my ten gallon now, but I am going to take some of the gravel out and add one of those two substrates and add a lot more plants. My questions is, can I add the substrate with the fish in or will it kill them when it clouds the water? I can net them all and do it, but I want to know what would be less stressful, and have a better chance of not losing fish. I have eight neon tetras, two julii cory catfish, one hillstream loach, and one mini mexican lobster. Any help will be appreciated.