Hi
@Sparkles! I'm afraid you're having broad mites, they're almost impossible to see without a microscope. An affected plant will show twisted new growth, blistered and “wet” looking leaves. Exactly your symptoms. If this diagnosis is confirmed I'd recommend to spray your babies at night with neem oil. If there's no evolution or if it's getting worst, you may consider moving the plant out of your tent in order to prevent the invasion from spreading (but they might be already infected and not showing symptoms yet). Hope you'll get through this, keep us up-to-date and happy growing 👊