quick question

the new seven leafs comming put have about 1/3 inch of ligter green. That lighter green the tip is now starting to brown my question is what might be the deficiency? If anyone could help i thank you

What are you water with pure water? What kind of lights do you have? How close are they? Are you keeping the soil moist enough? Do you ph test the water first? And what does that first sentence mean?

A lighter color of green is normal for new growth, it will darken. The brown leaf tips is an early indication of over-ferting, or at least plenty of nutes available. So no need to do anything, except water.

HTH