Does this look like a calcium deficiency?

Thanks @AmnZhz - I'll try laying off the water on these girls going forward. I flushed these with pH'd water this morning so hopefully I they start turning around over the next couple days.

Thanks for the tips Ecogeek. Question on the gnats - did you see them before you put down the yellow tape? I've tested the pH and TDS and both are in my expected range. I just swapped out my vent fan this week, perhaps a more normalized environment will do the trick.

Not quite sure but I have the same thing happening to mines, at 1st thought it was gnats or some type of insects so I did the yellow sticky tape and some other techniques after a week they were gone! Thought the coloration would improve but hasn't come to find out I've been cold/heat shocking them (it's winter time here so temps in tent would drop below 60 degrees in turn I would turn the heater on rasing temp to 80-88 at the high in the matter of minutes. So my girls didn't seem to like that much. 😢 Now I keep the fan on while running heater as well as the vent window. That helped keep temps H 80 & L 65ish. I also used Epsom salt and water to boost the chlorophyll back up to get the leave back green. She seems fine now. So it could be temperature inconsistencies or insects. But just as a backup check your pH levels in both water & medium runoff.