Northern Lights Auto twins

Hey guys! New week, here we are! As always, every Sunday is cleaning day. Took everything again from the tent, washed the saucers. Was also time to cut down some leaves as it was starting to look very bushy and hard for the light to get through it. During that time, came across with some bugs under the foliage, which isn't a great sign for sure. Not to mention the fruit flies that move in and are making my life a little chaos. Reducing now the RH a bit, and watering now on every 72h instead of 48h to keep the grow as dry as possible. Increasing the ventilator speed was another attempt, it so much air circulating should be hard for them to make a living inside. Just put now more of those fly traps and will add a couple glasses of cider vinegar here and there, as it attracts most of the flying things with success. Note that some plants are yellowing and that's never a good sign. Though for few weeks it was Nitrogen deficiency, but after increasing it and the CalMag values, the problem persists, so I'm inclined for something bug related. Besides that, temps are still very stable, RH was changed, now to 40% tops, and the light went a little lower to get it closer to the plants - always with the light burn effect in mind. 40cm is the line between the tops and the lamp. Flowering is looking good, buds are forming well and seems that's gonna be a good ending if I can keep the bugs under control. She's on pre-flower, switched the nutrients and increased a bit the feeding volume. That's all folks, have a great week