needin help---yellow tips/ under curl

ok i have a few plants that have yellowing at the very very tips of the leaves not the entire leaf, just the tip.. and a few of the leafs are curling under a bit, not terrible but making like a half moon shape. i have a 400w hps, temp & humidity is right. got fresh air coming in, using fox farm happy frog in 5 gal buckets, 4th week of veg, plant leaves are a nice dark green. the bottom 2 or 3 leaves are yellow and dead looking but im not sure if thats from lack of light or due to my problem im writing about now.. HELPPPP MEEEEE!! i will try to post pics if necessary

and i want to thank anybody in advance that gives me some advice, so thank you very much

A picture is worth a thousand words, post a pic please

Sounds like over fertilization. Back off the nutes .

Check out bigbudsmag.com they have every answer ur looking for. Also urbangrower videos.com

i havent added any nutes yet

sorry gf told me it was the tips before i got to see them 'women'... but u can see what im talkin about.. is this anything to worry about or am i justparanoid

looking at pic 1 looks to me like sighs of mag def.......

thanks cjayt. does it look like that for all of them or just the first one? doesnt fox farm already have cal & mag in the soil? or is it just a low amount

never used it b4 but doesnt it only hold enough nutrients for the first couple of weeks so maybe its hungry

could it look like that from being hungry? does it exhibit the same symptoms wether it is lacking or it has too much. like too much nutrients and too little will show on the plant in the same way?

yer your soil usually holds nuts for about 3 to 4 weeks that's it......usually after that time less exp growers come across little problems....as well thay don't kno what to expect or haven't herd of these common probs....and to yr question yer it prob did have cal/mag in soil but a low amount....

id try some cal/mag bro............

good deal.