So the tips of a couple leaves are curling down and are slightly browning at the tips. Could this be due to under watering or heat? It doesn't look like nute burn.
Probly nute burn... It will be ok, just keep an eye on it.... Make sure you mix fresh nutes with your water every time yu feed, never use the same nute mix twice.... Mine are the same way... I am at 6 weeks flowering and shes healthy as a horse, burnt tips and all...