#Monstera The bleached effect on the 1st photo appears only on new leaves and decreases as the leaves get older but the leaves still look different than the much older, original leaves.
The mottling in the 2nd photo is rather new. I've noticed a few splotches here and there before but this is the first time I see it on almost the entire leaf. Again, this is a new leaf - 2nd newest. The newest leaf (still unfurling) doesn't seem to have it.
I've also just noticed the yellowing/bleaching on the lower tips of some leaves (3rd photo). These are the medium leaves.
I've checked for pests and there aren't any. Grow lights give them about 500-700fc for 12 hours daily. I've also read several journal articles for mineral deficiencies but nothing seems to match.
The plant has doubled its height and some more since I got it (the plant card shows the original height when I just bought it in May). New leaves appear so quickly one after another but they don't get big anymore.