Kandy kush and crystal limits (Need Help)

Hi, the tips of the leaves are curling down, but only the tip what can it be ?

i water 1 gallon of water every 3 days they tool realy in good shape exept those curling tips.

thanks !

your probably over watering, MJ should be watered when they are nearly bone dry.

Yea it's probably over watering, like frmrboi said let your soil get bone dry before you feed em.

before i was feeding them when surface was dry but now i water every 3 days when everything is dry with 1 gallon each plant. hope to see change thanks !