Brown tips+ Yellowing on seedlings.

Have a couple different strains going, the unhappy ones on the left are Purple #1.
Temp is pretty consistent, around 77. Humidity is around 30%. I've done 2 diluted feedings so far of wild thing (M,B,A) and one regular strength feeding. Been PH'ing the water to 6.8. Unsure about the brown tips...they started looking brown even before feeding.
I figure the humididty should be a bit higher but i dunno how to raise it.

Any suggestions?

Still the same thing happening. Anyone know?

i had the same problem and lowered my ph and it seems to have worked, try adjusting the ph

You didn't need to feed them yet. Probably over-watering them by the droopy leaves and yellowing.

scubadude239 said:

You didn't need to feed them yet. Probably over-watering them by the droopy leaves and yellowing.

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would have said the same thing

E: let them dry until at least the first 5cm are completly dry.