No pressurized, just DIY yeast mix. I haven't made any huge changes really, just been patient waiting for things to grow whiles putting much more effort into scaping/pruning. I got the discus from an importer which is fairly local to me (still a 45 minute drive).
The tank isn't looking its finest atm, did a massive prune, and am waiting for it to grow back, hopefully looking better. I am surprised though that all the plants have done do well at 30 degrees (86 Fahrenheit) as I've read that most plants don't do so well at such a high temp.