May I ask...Do you keep them @Ph 6.0 in soil? IMHO if this is the case I'd raise PH to 6.5-7 in soil growth, for best nutes intake. GL! 💪
Lemon juice (as well as Citric Acid or Vinegar) are best used to lower the PH in flowering because of the way these acids bond to phosphorous, enhancing flower growth. During Veg. is best nitrogenic acid because Nitrogen is required in higher 5ges during Vegetative growth. PH+ & PH- products use these acids anyway, they just mix it for you and make it easier.
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