Help a newbee out! yellow leafes

Hi!

I´m new to the growing business. I got 2 plants (snow white & white widow) 5 weeks old. Putting them on flower today.

I have problem with yellow leaf´s on the lower part of the plant and spreading. started 2 weeks ago. I think it´s a Nitrogen deficiency. So I fertilized the plant a week ago (N=7 I think we use a different NPK measurement in the Nordic country´s). How long does it take for the plant will respond on fertilizer?

The plant´s has been on 24h light, I read that plants can get to much light. I´m using soil. indoors


250W HID, 30cm from plant. temp on the highest tip 29C.

I dont know the PH of the water.

I´m going to use Canna Flores now in the flowering stage. Will that be enught for the plants? Will this problem go away now in flowering stage?

You need to get a pH meter asap. Without proper pH, nutrients can essentially get locked out. Your plants do have a little nutrient burn though (the yellow tips).

Until you get a pH meter expect similar results, if not worse results.

Hmm, nuteburn. I have not fertilized them munch. just last week. I have been rely carefull, rather under fertilized.

The 3rd picture looks a lot like nute burn with the yellowing at the tip. But as I said, you won't know until you get a pH meter.