Is this problems from Fungus Gnats ?

dbCooper7
dbCooper7started grow question 5y ago
Im in during fighting with the fungus gnats. Started treat them with humboldt flower shield and sticky paper. , I just wanna know what is this sign ? , Its happen only 4 plants from 10 and its GDP i? So i confused its is from ph issues or fungus gnats starting root disturb. ?
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Leaves. Tips · Burnt
Leaves. Color · Yellow
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dbCooper7
dbCooper7answered grow question 5y ago
Others plants just look norally but still able to see a few of gnats
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