I have a 12x12x18 inch terrarium that I have set up. I put in Zoo Med Hydro balls - a fabric barrier and covered with Coconut Fiber. Filled with distilled water. No matter how much I rinse my fiber it still turns the water red/brown. I have a pump with a waterfall coming down the back side but it is running red/brown too. Is this going to hurt my red eyed tree frogs?