You are already doing great things. Remember that you should not feed too much ever. The fish must finish all the food in 5 minutes. Then you feed every 4 hours as much as possible, even at night. Turn the light on before feeding, and leave the light on for at least 20 minutes afterward. One big caution is that you should not over feed with pellet food, ever. This is a sure way to invite problem with ranchu bladder.

How about feeding your fish with just red worm at every feeding. Furthermore, add some sort of vegetable to the diet,either duck weed, spirulina or any form of algae to the diet, it will ensure that your fish will have better pigment. Please be advised that this will have to be a long term regiment in order for it to work properly, ok.

You should also study up on how to use bio enzymes which will help prolong the quality of your water as well. It will treat the ammonia and nitrate in your pond so you do not have to change the water too many time. (try to keep the environment as stable as long as possible) I also recommend that you use sponge filter in your pond (which you should also squeezed to clean regularly every day). Live feed will make the waste particles much smaller and the sponge filter will be excellent to treat this condition. To keep the water filled with too much of the wastes will invite trouble with the gills of your ranchu. Hope that this is helpful.

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