Hey buddy it's very hard to get a cal mag toxs. I wouldn't worry about it too much. Just focus more on the water you are putting it in, as hard water has tons of cal mag in it, and that is anything could show signs of a tox/def. Not really gonna be an issue once your PH is fine I'd be worrying more about cal mag defs than toxs as I said, it's very hard to overfeed a plant on cal mag and this is turned and used straight up as energy. So the high dose will go fast. For your next feed just bring it down to normal or if u c ur plants loved the feed then I'd up it. Good luck. Feel free 2 DM me regarding any of this. Happy growing