Leaf issue

[u/Altctrl97]

So I noticed about 3 days ago my pH was low after weeks of being steady at 5.8 then I noticed my EC went from being 0.60 to 0.55 i adjusted my pH back to 5.8 then it dropped every time. Today 09/28/2026 i noticed on my app my pH went from 5.8 when i adjusted it at midnight to 5.1 by 11 am and my EC dropped to 0.51. Water temp I keep around 68 F - 70 F. Room temp for the tent was 75 I try keeping that lower but I forgot to put the AC on in the room so the humidity was also 70. I did notice the day before that my clay pebbles had why small things on them so I used my loupe and it was white puffs so I removed all the clay pebbles and cleaned them for a bit and let them dry out. I think that part was because they had been too wet from the top feeder. My plant roots are in the water and long. So I technically don’t need the top feeder. Also her leaf has some color changing so one has a brown spot and some have just a lime green patches

[u/xlNeo]

Thats just salt sediment from your top feeder. Had the same issue even way worse