Outdoor - Dinamed CBD

Hi there, short answer : yes! This will retain humidity and help to keep a warm soil. Highly recommended when growing outside! Keep up the good work, your setup is beautiful! I'll be around, good luck ;-)

In soil you should fertilize no more than once per week, beware of dark green leaves, they are a symptom of too much grow nutrients. As for watering, it not only depends on the size of the pot, but the size of the plant; the water you give the pot should be enough for the plant to use it in 4 to 7 days at most, anymore than that and the soil will stay damp too long: i) the wet soil will attract bugs, ii) the roots will have trouble getting oxygen, literally drowning the plant making it grow real slow. A pot of soil usually holds around 20% of it's volume in water, so 57 liters of soil would need around 11 to 12 liters of water to be fully saturated (maybe a bit more), but if your plant is too small to use all this water, it could be disastrous). Also, I would stop feeding and let the plant get whatever it needs from the soil; resume feeding once you notice the first symptoms of deficiency, 57 liters of soil should lasts the plant quite a while (11 liters of soil lasts me 7 or 8 weeks before needing liquid fertilizer). How to tell when to water? When the plant needs water, you will notice the leaves will become droopy. I would water with 2 liters, and check the plant daily for how long it takes to use that much: top soil feels dry? leaves droopy looking?

Same to me, your plant looks very nice. Maybe you should give your tomatos some drinking and food too. They are looking quite hungry. Happy growing.

First of all, holy vegetation! Wow, that one bushy plant you have there. The yellowing of the lower leaves could be due to lack of light penetration. You may want to try some defoliation to allow better light penetration to see if that helps. But everything looks really good to me from the pics. Good luck 👍