Minigrow:Wedding gelato RQS & Black Bomb

I am now running the intake fan also together with the exhaust fan to keep temperature and humidity a bit lower in the grow room. On day 33 of flowering I lower the lights 2 inches and now standing at 28 cm above the canopy, if I see the plants can take it the next day or 2 I will keep this light distance till the end. Plants' were tip burned from excess nitrogen as i up the dose on fish mix at 6ml/lit for three days ,and then cut it down completely and up the bio boom to 5ml/lt. In the final days of week 5 I lower the lights to 25 cm above canopy as I don't have much space to cover I go for high intensity at about 800 μmol ,leaves are deep green and buds are everywhere and both plants seems that they can handle this intensity.(before 2 weeks Black Bomb suffered from light bleaching when i was putting the lights even at 35 cm distance from canopy. Now on day 35,I don't know how ,but it seems to do well at 25 cm distance from lights. Was it harden threw these weeks or from the previous light stress at 35 distance? I don t know...But I saw that the light bleaching was reversible on Black Bomb as the yellow leaves became green again, maybe Alg-a-mic played a role there and that I saw the signs early.