I think this means he needs more sunlight? Or because this happened the day after I watered him, I worry I overwatered? I watered him the same as I used to when he would plump up the next day. So it worries me
I didn't see any fuzzies on his roots this time when I moved him around a bit (because he got loose in the soil, he was easy to move). It's been glum and rainy recently, but we've had many sunny days the past few months for him to soak up. I'm thinking where my window is, the light isn't hitting him properly. I live in a small NYC apartment and the window only gets sunlight from a small section of open sky because the window faces the other side of the building. I tried buying a grow light, but have nowhere to plug it in because all my outlets are behind furniture and if I use a surge protector, the wire has to run across my bedroom floor and I'll trip on that for sure.
If he needs a grow light, are there any battery operated ones? I tried searching online but only see big and bulky plug ones. I don't know how I could even set up a battery grow light in my window sill... I was thinking one that sticks to the wall, but then the light would hit him from the side, not above.
I was thinking I could put him under my desk lamp and give him that regular LED bulb light? But then when would I put him there and for how long? I would have to take him out of the window sill, away from any sunlight he'd get there, in order to put him under my desk lamp. I worry taking him out of the window during daylight hours and giving him artificial light bulb light would hurt him more. But if I give him light at night, then he won't have any time in darkness (plus I need my lights off to fall asleep).
Here's a photo of him from when I soaked him: He looks mostly the same now, except he's soft when I poke his spines. He's also a lighter green than what the photo shows (but he was the same light green back then, too).