@Mr_Weeds_Autos,Even though I’m growing in ProMix HP? I’ve done a lot of research on this topic as I was worried about a cal mag deficiency. I’ve read that a lot of experienced growers say cal mag isn’t necessary with ProMix HP and tap water. I made sure to got some cal mag in case my tap water is low in calcium, I will keep my eye out for any calcium deficiency. Thank you for the feedback, I really appreciate it!!
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