First time grow help.

I'm growing blue dream and noticed some of the leaves looking funny.
I planted the seeds feb 25th.
They are planted in 5 gallon pots with mix of happy frog and ocean forest.
The lights they are under is 4 t5 fluorescent bulbs kept about 5 inches away.
Temp usually range between 70-85 and humidity is around 30-40%.
The ph of the run off water is 6.4.
I havn't started using nutes but was planning the next time I watered.
Any help on what my defenciency is would be much appreciated.

I see no deficiency,just what appears to be heat stress.85°F is too hot unless using co2.

Raise your lights a bit higher to combat this.