5. 50% Water Change Weekly
Discus have weak immune systems which makes raising them, at times, quite trying. Discus need cleaner water than many common fish can handle, so you generally need to do more water changes than a normal tank for discus to thrive. There are breeders that change 50% of the water daily! 50% weekly will suffice.
4. Discus Need Lots of Oxygen
Keep an outside filter and an inside sponge filter for extra aeration.The underwater gravel filter alone will not be enough.
3. Keep Nitrate Reading below 10
Not the 20-30 that most freshwater fish are fine with. Again, Discus are very sensitive to nitrate readings so keep them low. Read more…
Cold Water Fish Diseases
Fish tank fish are susceptible to a host of diseases. Here is list of cold water fish diseases:
Ammonia Poisoning Symptoms: Red or bleeding gills. Fish may appear darker in color and may gasp for air at the surface.
Bacterial Gill Disease Symptoms: This disease is difficult to accurately diagnose visually. Fish may breath heavily and show bright red gills. Fish may sit on the bottom of the aquarium or near filter returns at the water surface. Read more…