In order for Discus Fish to breed, you need the right water temperature... Water temperature is a key component to stimulating discus fish into breeding. Drop the temperature down from 86 to 82 with a water change of 30-40%... use replacement water that is around 78 to achive this... this helps to simulate a strong rainstorm that would occur in nature where your discus fish live in the wild. You can also lower the pH on this water a few points, say from 6.5 to a 6.2 or so. Keep in mind not to change the pH value to rapidly as pH shock can be fatal... no more than a .5 change is advisable. If you can coinside your water changes right before a Thunderstorm is scheduled to hit your area this can greatly increase your odds. The dropping of the barometeric pressure and the charged atmosphere has a deffinate affect on discus fish. Seperating the pair of discus fish into two seperate community tanks for several weeks also can help the discus fish to re-establish their breeding pattern. Keep in mind if you place the discus fish together in a community tank, they may bully every other discus to the point of danger. One (secret) that we use is placing our discus fish breeding tanks side by side so that the discus fish can see each other...