Spliff Strawberry and CDBrelief Aeroponic Grow

The Spliff Strawberry is growing insanely well. I'm really happy with the overall development. Also the roots really get massive already. Unfortunately the CBDrelief is still much behind. I think this plant is not so happy to be grown aeroponically. The tips of the leafes are slightly curled down. I think the plant is under stress but I'm not sure about the cause. Let's see how it will do in the next days. Today I added silica for the first time and hope it benefits the CBDrelief plant especially. Since yesterday I also noticed that they are starting to produce a slight smell.