Hey Peter sorry for being absent, I have been working on something. Yeah, I got it to work and actually compared it with a Kratky method.
@cohenoshri I am assuming you are using an ultrasonic fogger. They tend to heat up the water but not enough to be a problem. I set mine 2 minutes off 15 seconds on. My setup consisted of a 5gal bucket with a 1 disk ultrasonic fogger floating in the water. I noticed that compared to the Kratky, The roots in the ultrasonic fogger were longer so they could reach the water, maybe the fog was not enough?
I decided to check if that was the case. I made an external fogponic system. I used two buckets connected by a hose. One bucket made the fog and used a fan to send it to the other bucket (2 buckets w/ lid, 1 hose, 1 timer, 1 fogger, and 1 fan cost around $55 dls) where the plant grew. Unfortunately, the new system did not work and my plant died the next day. I am not sure if it was a leak, or if there was not enough fog.
Fogponic systems are very delicate, maybe you can make it work. Good luck!