1 week into flowring

Hi guys i have my girls 1 week into flowering , watering them once every 36 hrs or so using One Part - Total Bloom fertilizer , now my "problem" is that the fan leaves are drying out , they are still dark green but if i touch them they crumble and die at the tip is this behaivor normal or there might be sometihng wrong with them ?

What ya growing in? soil, coco, hydro
whats ya temps?
try backing of the fert.
what lights ya using?
got any pics?

Soil ~ Temp is around 24 C using CFL`
Might be a nute burn cuting down on them just using plain water see how it goes

sounds like over feeding 2 me.