Help don’t know stumped

Tom Buzz said:

I have plants all well except one. Changed soil and light last week but plant was bad before. Ph was 7.5 got down to 7. Yellow leaves brown spots and fall off. 7or 8 all time. Started like that when flower tried no nutrients tried adjust light and water etc no good. Feeding bloom 0-10-10 and grow 3-1-2. Plant beside it healthy and big 3 pics. Here another pic of plant beside and babys all good

checked ph again plant beside is 6.5. Bad one is 7. Added water white vinegar bringdown

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Tom Buzz said:

Not small ones. The big one. And has big led if it’s on had light burn so moved up last week

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SofaKingHigh_ said:

How did the roots look when you changed the soil?

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Tom Buzz said:

Looks like root problem you are right I am going to check roots again. Thanks

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