Red Stems

My plants have red stems, I'm using GH FloraNova One-Part Nutrient Bloom 4-8-7. I talked to some growers at my local dispensary and they said potassium deficiency, but I'm not for sure. any help is appreciated

Some strains produce red stems letting you know a nitrogen deficiency is coming.

calicat said:

Some strains produce red stems letting you know a nitrogen deficiency is coming.

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My nutrient saysing 4-8-7 ratio, but on the ingredients on the back it doesn't mention the Phosphorus or Potassium %, but it does say the nitrogen % is 4%. Does this mean that the P is 8% and the K is 7%? because it doesn't say it on the ingredients, but i thought its just implied maybe.

I think the ratio is the weight of each one mixed in the fertilizer it should say on the bottle

Yes. that is correct. Phosporus and potassium are the second and third numbers.