I can’t figure out what’s going on with the dry/brown spots on my leaves

Can someone help me identify the issue and what I have to do to resolve. I’m leaning towards nute burn or my plant is root bound. I’m three weeks into flower so any help is much appreciated. It’s is a Sativa strain if this helps any. I have another indica plant that’s having no issues but it is potted in coco coir and organic super soil. The plant that is struggling is in FF Ocean Forest. Ive been feeding the trio. I just flushed a couple days ago to see if that would help. I checked the PH and it’s a little high(little over 7) but I didn’t think it was crazy high.

The problem is you’re bottle feeding into soil that doesn’t need it. FFOF is good to go on its own. Maybe a top dress during flower and that’s about it. Anything above 7 isn’t good either, try to keep it between 6.5-7.

Dontjudgeme said:

The problem is you’re bottle feeding into soil that doesn’t need it. FFOF is good to go on its own. Maybe a top dress during flower and that’s about it. Anything above 7 isn’t good either, try to keep it between 6.5-7.

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So should I just completely wait till it dries out and just feed water and it will relieve the nute burn? I’ve already flushed just wanna make sure it comes back. How should I get the ph lower? What to use and how to dose? Thank you by the way!

You definitely have too much nitrogen. Dark green leaves. Get a trusted ph down "general hydroponics" phosphoric acid. Adjust your water to 5.8 for a heavy flush. Then water between 6.2 and 6.8 max. FFOF is a pain in the ass and inconsistent as packaged. Used it for years with heavy modification and amendments. If your soil is that hot a top dressing of flower fert. "dry" would be all the food you need. Wish you luck.

PositivePat said:

So should I just completely wait till it dries out and just feed water and it will relieve the nute burn? I’ve already flushed just wanna make sure it comes back. How should I get the ph lower? What to use and how to dose?

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MICHI-CAN said:

You definitely have too much nitrogen. Dark green leaves. Get a trusted ph down "general hydroponics" phosphoric acid. Adjust your water to 5.8 for a heavy flush. Then water between 6.2 and 6.8 max. FFOF is a pain in the ass and inconsistent as packaged. Used it for years with heavy modification and amendments. If your soil is that hot a top dressing of flower fert. "dry" would be all the food you need. Wish you luck.

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I’m on it! Thank you so much y’all!

PositivePat said:

I’m on it! Thank you so much y’all!

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Update the plant came back with vengeance as you all had mentioned. Thank you! I had three different growing methods I was trying but my coco loco and super soil mix came out the best with little to no effort. I know which method I’ll be using moving forward.