Strawberry Gorilla & Blue Dream

I have been impressed so far with the growth both plants have shown. The Blue Dream is 7cm tall and the Strawberry Gorilla is 10cm. Neither have stretched much, but they both have 4 nodes of growth and the 5th is visible on the SG. For 2 weeks old, they look very healthy. The SG has some marks on the leaves, but I think this is just from the leaves getting wet while watering. The short height makes me wonder if the light intensity is a bit high. I raised the light to 70cm from the plants. I watered 2 times, 2Liters total for the 3 plants, mixed with activera.