Apple Blossom/Nap Time in 2x4

Quiet week for the most part. Main goal was to do a final, large defoliation to give these buds room to grow and breathe. Humidity is a concern, it wants to creep into the mid 60s when lights are on after a watering. I added a couple more fans and decided to change my watering regimen. Where I had been doing drip waterings for 90 seconds at lights on and then 3 times more every 4 hours, now I'll drip for 120 seconds, but cut out one watering and space them 5 hours apart. This should allow more time to dry out between waterings. I think I've been a little overboard about keeping the coco moist. I'm getting white growth on tops and sides of containers. No smell coming from it, and it doesn't look like mold. I added more perlite to cover up the surface of the tops and hopefully keep it from growing more. I noticed a slight mildew smell this week when opening the tent for the first time of the day. At first I thought it was related to the white container growth, but after a smell check its not coming from there. Its actually coming from some of the buds themselves. Its slight, and you smell more of the plant smell with some skunky undertones, but there's definitely a faint smell of "I forgot to take the laundry out of the washer for a day". This made me nervous I was experiencing some kind of bud rot before my buds were even formed. Close inspection of outsides of buds shows no rot or mold. I decided to open up one of the buds that smelled stronger than the others of mildew. I kept it growing but used tweezers to poke around. No signs of discoloration or any wispy growth. I think its just the smell of the buds. Only comes from the three Apple Blossoms, not the Nap Time. So maybe its just the AB phenotype. Research found a couple other past references to this mildew smell on different strains, and some thought that it indicated an overfeeding of nutrients, particularly phosphates. I'm barely hitting 1150 EC though and underfeeding according the general hydroponics feed chart. Just going to keep on going.