3 Blueberry DP 1Blueberry OG BF

Hey guys, I startet to water the Blueberry OG (the left one in front) without fertilizers, cause the the flowertime of this strain can be 1 week shorter than the Blueberry from DP. The buds are really swollen and the trichromes of this one are mostly milky. Is it ok to flush it from now on 2 weeks? Or am I to early? The Blueberrys look amazing. The two in the back yard haven’t mostly white flower threads. I imagined maybe it is cause they are much higher then the other 2 plants. Getting more light and power. The flowerthreads of the two in the back I think are 80% orange. The Blueberry in front of the right side have 40% orange flower threads. The Blueberry OG have 50%. All different 😂 But I like it to watch them out and I like that each plant is diffrent. I stoped to drop the temperature and I think I can see already a bit of violet on the Blueberry OG. I think the Blueberrys are much slower. But the buds of all 4 plants get bigger and bigger. I cannot wait to see how much I will harvest. Ah and I stop bio grow😊 So see you next week guys. And thank xou all for the response of the last week!