Wow, this article and the two links embedded within were really informational (despite the off English). The suggestions were very reasonable and made sense as far as chemistry went. I got the feeling this guy was one of those Malay breeders with a smattering of English letting the cat out of the their industrial secret bag. Very sensible suggestions.you may read this article..
Discus Fish Care Secrets: HOW TO MAKE A DISCUS BREEDING ENVIRONMENT IN YOUR TANK