Help a NFG out with his brown spots

[Capt.underpantz]

This is my first attempt at growing after lurking here and attending YouTube university. My plant has been growing great up till now when I discovered that her leaves are turning yellow and brown from the tip towards the plant. This is only seen on the older growth on the bottom of and on only one side of the plant.

Medium/grow method: Soil, 5 gallon fabric pot with OF

Feed: Grow Big 1 tsp per gallon ( just switched to Tiger Bloom 1 tsp per gallon gave first feeding with this yesterday)
Molasses 1 tbsp per gallon
Raw Kelp 1tsp per gallon
Bloom Booster (1/4 of tbsp per gallon)


water source: tap water left out for 24hrs and phd to between 6.0 and 6.4. At free extremely overfeeding in the beginning I now water lightly only when the leaves start to slightly droop and she looks hungry. I only give her about 1.25 to 1.5 liters each time I water/feed every 4 or so days.

Strain/age: Goji OG, roughly 7 weeks old

light used: SF2000 20/4

Climate: 78F 64% humidity

 

[Mañ'O'Green]

@Capt.underpantz Welcome to AFN It looks like they are thirsty. Get an air gap under those pots. What you need to learn about watering will come with practice. Here are the basic rules: Never let the soil dry out. Soil and or coco can become hydrophobic if allowed to dry. This means it repels water. This in turn will create dry pockets in the soil and the roots and microbes will die there. If your soil - coco have accidentally dried out use a surfactant to help re-wet it. I like yucca powder. Don't let soil remain soggy by watering too much too often. Root rot, damping off, molds, fungus gnats and other problems start in soggy soil. When you do water water the entire pot. How to learn when to water starts before you plant the seed. Fill your container with fresh soil/coco and weigh it (heft it) this is the lightest weight and consider it a dry pot. Now slowly water until the soil/coco will no longer absorb the water and run-off begins; weigh the pot (heft it) this is the maximum water, the wettest the pot can get. The difference between wettest and driest is the maximum water weight, for ease of explanation lets just say the water weighs 20 pounds. When the pot loses 10 pounds (half of the water weight) it is time to water again. There is an art to watering.

The nutrient problems are most likely the soil is too dry for the microbes to function and they either die or go dormant. The OF is a soil and needs to be maintained at a moist level.

Get a good surfactant and make sure your pot is thoroughly wet but not too much run-off. You have to water really slow over a few hours.

The nutrient schedule calls for a mix of products to get a balance fertilizer.

I would shoot for about 66% strength for autos.