Going to disagree with my growmie here... swollen leaves do not indicate too many nutes.. they indicate overwatering and besides which, I don't see that at all here!
What I DO see is the beginning of several deficiencies in a couple of the plants and a nitrogen toxicity in the two plants on the right... the Mephisto's Wedding... Your Hubbabubba, JammyDodgers and your ManBearAlienPig are showing signs of either a potassium or phosphorus deficiency but it's too early yet to figure out which one... and your Sour Crack is simply showing signs of overfeeding (little nute burn on the tips).
You have no information in any of your diaries as to what you're feeding them or how much but first, since your pH looks good (it could be lower but it's fine), I would flush out the Wedding giving her 1/2 strength nutes at the tail end of the flush... when she dries out, just give her pH'd water and then when she needs something else again, feed her but cut back on any heavy-nitrogen nutes. For the Sour Crack, just ease up on whatever nutes you're giving - you might even do a water/water/feed/water/water/feed routine for a while. For the others, I would start them on a good PK booster ... they're really hungry for those nutes.
Good luck!