Autoflower Soil / feeding

Hello everyone,

I’m planning to grow 4 autoflowers in 38L airpots in a 3x3 (90cm x 90cm) tent.
Using a HLG 550 V1 Led. About 3 to 4 feet (55-75cm) above the plants.
I bought some soil and veg and flower liquids, and this is what I’m planning to do:

Soil:
- Clay Pebbles on the botom layer of the airpots
- 66% Canna Terra Professional
- 33% Canna Terra Professional Plus

Feeding:
- Canna Terra Vega
- Canna Terra Flores
- Feeding once every week

- Week 1: No Feeding
- Week 2: No Feeding
- Week 3: 2ml Canna Terra Vega
- Week 4: 1ml Canna Terra Vega + 1ml Canna Terra Flores
- Week 5: 2.5ml Canna Terra Flores
- Week 6: 2.5ml Canna Terra Flores
- Week 7: 2ml Canna Terra Flores
- Week 8: Flush

The feeding schedule can be longer, depending on their growth.

I am worried that I feed my plants too much because of the soil I’m using. I don’t know the difference between the plus and the normal version. Please let me know if it’s good to mix these 33% plus 66% normal.
Since Autoflowers need less nutrients I want to know if I might exedently overdo the feeding with the soil. This is also the reason why my feedings are kind of small.

Please let me know if I’m using the wrong soil or a wrong feeding schedule. So I don’t over- or underfeed my plants.

No point in gravel in the bottom, the idea it improves drainage is a bit of an old wives tale.

Miyagismokes said:

No point in gravel in the bottom, the idea it improves drainage is a bit of an old wives tale.

Click to expand...

Furthermore everything is okay?

Nothing jumps out as faulty, but I grow organic full season outdoors... I know next to nothing about the needs of an auto, those didn't even exist when I started.