Water Quality is true represent prima facie factor in looking after diskus, matter which your need pay attention to entire/all content which is there are in water ( pH,dH,temp, dissolve oxygen, iron content,obstetrical of mud, nitrit/nitrate,chloride and obstetrical other;dissimilar) and for that you need appliance or if there is laboratory which can assist you know that matter, and pay attention to your tap water which you use for keep discus, whether/what water quality always remain to and stabilize or sometimes change.
After water all right.
We see how quality from discus which you buy, how quality and amount from food which you give. Afterwards we see how to changing water and amount of replacement water (at least 50% from capacity a day) and filtrate system and lighting power(should be dim) and type of tank you plan for (plant tank or community tank with another fish species or with other discus) and dimension of tank.
using drugs for discus.
Oftentimes we give drug which is disagree with its disease, by the reason of manner and stock limitation medicinize for the fish, hence that disease will be immanent and cannot heal. Even now exist drugs for fish capable to healing a lot of disease. Beware to drug which is like this B) .
Always use correct drug and the real correct dose.So... like this, hence look after discus will become easy to, even very easy.
Have a nice discus time.....Bye