Is this a issue if so how to fix it

[Stewie85]

My plant have been on flower for about 4 weeks now And the Leaves are starting to look different kinda burnt but not sure it’s it’s only the top part of the plants
my 1st grow Any help will be appreciated

 

[Apoc]

Is it just the tops? How close and what lights and strength?

Get a picture with white light not that yellow it washed out the leaf color.

Are you suplimenting Cal/Mag?

What are you feeding and how much?

Just offhand I'd say Sulphur, Epsom salt, couple teaspoon in a spray bottle and Foliar feed. Then add some Epsom to your water, again couple of teaspoons to a gallon.

When in doubt, 1 drop Superthrive per cup of water for a few days. In iffy cases I also Foliar feed seaweed. A good "I'm not sure mix" is 4 drops Superthrive, 3ml seaweed and a teaspoon of Epsom salt in a 32 ounce spray bottle. WalMart has bottles for under a buck.