LSD Auto 1st time

Hello
Did you get 2 separate samples? The ata-xl and then the pk 5-4?
If so you can use the xl throughout the life of the plant but maybe don't start until the plants about 4-6 inches tall and has a few sets of true leaves.
The pk you want to start that right as the first pistils show up, start with low doses and then buildup each week.
But when you're in the seedling stage you want to do zero or very minimal nutrients.

Hello, friend! :wave: :innocent:
Using a ph-meter, you can acidify the water with vinegar or amber acid. But the best option would be to purchase a special phDOWN facility. It will contain buffers to maintain acidity in solution and in substrate! I recommend using substances with phosphoric acid concentrate... this acid will help not only grow a healthy plant on vegetation, but also ensure quality flowering of your girls! :innocent: :ok_hand:
Good luck, friend! :innocent: :+1:

There are a few issues. Are you growing out doors, then planters should be dug into the ground to keep the root system from heating up to much. Soiless in veg wants 5.8 ph and around 1.4 to 1.6 ec when switching to flower, 6.2 6.3 ph and less nutes to start, I start out at 1.2 and increase each week for 3 to 4 weeks then back it to the 1.2 for late flowering.
Check your runoff ph and ec levels, that will tell you where your at and what needs to be done. Also give extra water in fabric planters to ensure you wetting the entire root system, dry areas also create spots half way to near the top of the plant. Cheers friend

Most breeders are off by a few weeks with their harvest times. This plant has a 10-week flowering time, not including the seedling stage and veg, so your looking at about 14 total weeks before harvest. Hopefully, I answered your question and remember Happy Growing and Free your mind one puff at a time.