Indoor soil problems

So I keep having an issue when growing indoors and it’s driving me nuts. Been growing cannabis long time but for some reason lately I keep having issues. I was a hydro grower for a long time and never had a problem. Few years ago switched to outdoor soil in my garden bed and results have been fantastic. My outdoor bed is fully organic with local compost and amendments. Never have any kind of deficiencies or problem. Over the winter I was bored and wanted to run a few small indoor grows just to have fun with. The soil is coast of Maine stonington mix with some fox farm seed starting mix as a top layer. I’m growing autos under a black dog led. Small setup, 4x8 tent. Temps hover around 75-80, 50-60% humidity light cycle 20/4. I have well water and use same water for outdoor plants. As you can see from pictures every seed I try to grow inside will start off fine and then develop issues and almost stop growing all together. New growth stunted, leaves curl, brown spots, just overall very poor health. I was under the impression this soil has everything for a growth cycle. Possible nutrient excess maybe? Anyone have any insight? Would like to save these if I can.

Looks to me like a cal mag issue... give it 2 tsp of cal mag per gallon of water . You need cal mag in your feed regimen when indoor growing... I usually give mine a Tsp per gallon when feeding and plain watering...

Why are you growing autos indoor? It seems to me that you are using more power to have those flower in a 24hr setting vs 12/12 with photos. Unless you are growing autos with 12 hr light?

You waited a long time to ask for help. Those are in bad shape. My opinion they prob need more food. How long have they been in that soil?

Pictures in natural light are preferred. Of the entire plant as well as affected areas.

Romulanman said:

Why are you growing autos indoor? It seems to me that you are using more power to have those flower in a 24hr setting vs 12/12 with photos. Unless you are growing autos with 12 hr light?

You waited a long time to ask for help. Those are in bad shape. My opinion they prob need more food. How long have they been in that soil?

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im Growing autos because they were freebies from my last seed order and that’s what I had left so I’m using them up. I tried autos outdoors last year and although they did well, they flowered in June and humidity was 100% almost all the time here and mold was a problem.
These plants are only about 3.5 weeks old and have been showing this problem the last week. My first thought was cal mag so I gave then some along with some worm castings but haven’t shown any improvement. This soil mix is supposed to have everything needed for a grow cycle without having to add anything. In fact I’ve tried it outdoors in a pot last year on one plant just to try and did great. I only have this problem INDOORS. It’s the weirdest thing.

dsmer said:

im Growing autos because they were freebies from my last seed order and that’s what I had left so I’m using them up. I tried autos outdoors last year and although they did well, they flowered in June and humidity was 100% almost all the time here and mold was a problem.
These plants are only about 3.5 weeks old and have been showing this problem the last week. My first thought was cal mag so I gave then some along with some worm castings but haven’t shown any improvement. This soil mix is supposed to have everything needed for a grow cycle without having to add anything. In fact I’ve tried it outdoors in a pot last year on one plant just to try and did great. I only have this problem INDOORS. It’s the weirdest thing.

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Well I could only say that indoors isnt the same. If they could build a light that REALLY replicates the sun, it would be a hot item. I would say it needs more food. Cant say which one. I would grab a veg/bloom formula and give her a feeding. Dont try too many things all at once.