So now you have a discus tank. What to do now? Get yourself a good buffer, get the water under 7.0 ph. This isn't necessary but you will have better results by matching thier natural environment. Get the temp of the tank, HIGH! the higher the better with juv, less risk of disease. I have my juv tank up to 88. This may seem high to a lot of people, but i have had enough experience with infections and more that i don't risk it any more.
Invest in a good food. I highly recommend Inland Empires super beef heart flake food!! its amazing, since using this food, i have had zero problems! Find it on AQUABID.com search for superbeef heart
Last, if you want him to be really beautiful, buy 5 more the same size, NO BIGGER. and get them from a reliable source. not a website, not a sketchy LFS.
I speak from a lot of wasted time and money!