Hi Juku Eja, I hope you had a good holiday as well. I'm sorry to hear you lost 4 of your discus. But from your posts it looks like you are taking the advice of the discus here seriously, so you are on the right path. I respectfully disagree with your post on the most important thing - I feel that even more important than getting adult discus from a good source is clean water. You may be able to keep sub-par discus and even get them to a decent state in clean water; on the other hand, even the healthiest discus will eventually succumb to disease in poor water. I'm sure you already knew that. I am just nit-picking here. Don't be discouraged! I think you have it in you to keep great discus, just keep swimming