Week 3: No pics for that week. PE and GG were taking their time developing roots so I took them out and replanted them deeper in the hydroton (closer to the water). Roots popped through in 2 days which was great. Plants recovered quickly. PE had a minor deficiency; upped calmag to 2ml/l and all is good now.
Week 4: Good progress. Healthy roots. All variables well under control. Removed some bigger leafes. Testing LST on PE. Introduced UVB (310nm) for 90minutes a day (45cm above canopy). Plants drink approx. 600ml solution per day. PPM constant at around 950.