2nd grow, 3 ladies

Been feeding bloom & tea with every other watering. I skipped a watering and since then the widow has yellowing on the bottom leaves, dropping leaves every day. Not sure what's wrong. Both the surprise and Magnum had dry, brown blotches on the leaf edges on bottom most leaves. Unsure if what I'm seeing is an excess or possible fungus gnat damage. I've been finding fungus gnats stuck to the top of surprise colas. // I've noticed lots of fuzzies settling on colas. My grow space is in my closet and not closed off from the environment so my fan blows stuff onto them :/ good thing it's only for personal use lol. I think I'll do a flush in the upcoming week to try and figure out this nute issue. Wish me luck. I'm hoping the 2 smaller plants will be ready to harvest at the same time so I can use their lamp for the widow. It seems to be behind the others by a couple weeks. I did some light defoliation on both small plants to expose more bud sites.