Yeah, I will be changing the water later today and flush it through for 1-2 days without nutes and then start slowly again.
Well, that link was a video I made, weird that it doesn't work. Sadly, I can't upload videos here. The bubbling is really good to see on a video compared to a picture. Any ideas on how I might be able to show the video to you?
And yeah, afaik I'm using no drip feed, if the bubbleponics method isn't considered a drip feed, I don't know about all the terms for growing yet. I direct water via a pump into the hydroton at the bottom of the net pot, so far it seems to be keeping the hydroton and the rockwool cube moist but not wet, but I'm not sure. The tubing from the pump isn't touching the bottom of the rockwool cube.
Are you sure I should raise the water level? I've read somewhere that you should keep this much of a gap between net pot and water level so the roots above the water surface have much room to breathe. And I shouldn't be needing the moisture from the bubbles for the hydroton if my additional pump keeps it and the roots above the water moist, right?
The roots seem to be fine now, but as I said, I'm not sure if there's too little air now. The video should really help you out here, how do we do it?