Hey, so. If you've added bacteria. Water temps need to be stable at around 19-20 been optimal.
I would advise if you aren't getting good active bacteria in your tank, then just use H202 (note when using h202, it destroys organic matter such as bacteria giving you a sterile solution)
So, synthetic nutrients work best with it. If your water smells foul. Like pond scum, there is either something off in your mix or bad bac..
Growing DWC with bacteria can be tricky. Also you need to be changing the water every week