leaf tips curling

Ever since flowering my fan leaves have been curled under.. think it could be the strain? or a watering issue? water w/FF nutes when top of soil is dry.

Normaly a sign of overwatering or overfertilzation.

probably overdone with the ferts then. Is this harmful or should I keep going with the amount im giving em? only asking because there isnt any sign of burn on the leaves or anything.

U need to give more info - and u also need more pictures

upload some pics then i can give u my opinion

Wot nutes are u using> how frequent? What are ur p.h for soil and water?
What lights?

Give it a flush and back off the nutes a little.