My first time growing im using 5gallon buckets, I had started the seeds back in march and germinated them but with one of my plants I’m having problem with the tips of the fan leaves curling brown and the plant looking a little to like green for my liking and then for one of my other plants on some of the older fan leaves I’m seeing like darkish brown black colors around one or two of the edges on the fan leaves I put them out in the morning to receive there 12hiirs of light and give them 6more hours at night under the light anybody know the cause
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What type of soil are they in? What are you feeding it? Ph level? Lots of questions that need to be answered before we can help. Got any pictures of it?
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*nutrients today
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They are in kings manure soil I have currently just gave them some calmag and I heard that heating up banana peals in water is a good source of potassium for them I just have fed them there second round of calmag this week but I was gonna go pick up the other three fox farm nutrients today, I need to grab a ph reader for soil, white powder on plants is diatemaceheas earth to keep pests away I wash it off at night around every 3days
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How often are you watering?
Medium looks very bark heavy which can lower pH over time and not ideal for cannabis. Got holes in bottom of containers right? What exactly are the components of your soil?
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I was watering every 3days but I live In California so it’s been reaching 90 outside and I’ve been seeing the soil has been drying out a lot fast so on days in the high 80s-90s I would be watering about every day a half to two days
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I like to stay away from cow and horse manure because of the herbicides they use on hay production. Chemicals like Grazon is sprayed on the grass and then ingested by the animals. The chemicals stay in the manure and the environment for a long time and will harm your plants. That’s why I don’t use commercial hay or manure from Ruminants.
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Yes lots of holes in bottom of buckets as well
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That is not soil my friend.
“Ingredients: Steer manure, compost”
I would be using a base soil, with this added to it. Also with a large addition of perilite or vermiculite. 
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As blowout said, that’s not soil bro. That is a soil additive.
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