Help!!!! First grow!!!

[the rover]

hello all and happy new year. The plant nirvanas northern lights. Box 2 1/2 x 4 1/2. the light mars hydro 300. soil fox farms ocean f. mixed with perilite and vermiculite also washed or flushed soil prior to planting. light 20 on 4 off. nutes none yet. very impressed with how rapid she is growing! Im concerned with the browning on the leaf tips?? any input is much appreciated.
Thank you! Oh yes sorry this is at week 5

 

[budelee]

What's up rover!! At 5 weeks and no nutes I'm guessing she's underfed and prolly needs a feeding,but hang tight and someone else should be along shortly,good Kharma to your grow!! And welcome to AFN !!!

 

[namvet25]

Do you have drain holes in the bottom of the pot? Next time she needs watering start feeding her grow nutes at half the recommended dose and if your using non organic nutes make sure you PH your feed to around 6.5.You should also start feeding her cal/mag at least every other water.You may also want to lower your light to around 26 to 30 inches from the plant.Make sure you don't over water.

 

[the rover]

What's up rover!! At 5 weeks and no nutes I'm guessing she's underfed and prolly needs a feeding,but hang tight and someone else should be along shortly,good Kharma to your grow!! And welcome to AFN !!!

Thank you!!!!

 

[the rover]

Thank you namvet! yes there are holes at bottom of pot its a three gallon pot sitting in a 5 gal old paint pot. Its the nutes and the scheduling that confuses me. As well as ph issues I dont want to muck it up!! I know that less is best.