Slow growth

By flipping through your dairy and those are my suggestions: 1. Your plant is doing fine. Any signs of pistil? Just give it a couple more weeks or give it a 24H dark cycle to initiate flowering if you want to. I see you have another plant that uses the same setting and is doing fine, so I feel you just got a slow runner and it will eventually catch up later. 3. But you want to control the "N" value in your nutrient. The "Alga Grow" that you are using is a grow booster that contains lots of N. I will gradually switch to Alga Boost which will promote flower growth. Be careful with the N toxicity and it will significantly reduce the production of your flower if you don't control. I had the same issue. 2. You will be expecting a 2-weeks stretch period when flipping to flower and the size of the plant usually doubled. So it is nice to maintain a low canopy as you did. I hope it helps!