Do you guys usually bring the ppm down towards the...

Hello @MMJMD . All i see here is some burned tips and not any cal/mag deficiency. Just cut off a little bit the nitrogen. You are going just fine. Happy growing ! 👊

So basically what I see here is a little bit of N toxicity nothing crazy and nothing that will hurt your plant , I wouldn't cut the strength of the nutrients down but rather do it every second watering instead . When your pumping all those nutes into the medium your plant cant absorb all of it all the time so essentially what will happen is your end up just piling nutes on top of nutes until eventually you get root/nute burns . In your case its very very mild and is very easily treatable you just need to feed them less nutrients and more PH corrected water . The reason I use PH corrected water is that that your lady's don't go into shock stunting their growth for a few days , in veg no so bad in flower causes mega stresses that are unneeded . If you feel like your running into CalMg problems in the middle of flower I would just do 2ML per litre of nutrient solution you have mixed up this will prevent the the purple of your stems . I would also advise that you do a CONTROLLED foliar spray with your CalMg solution I would spray were the least amount of bud site is this way your plant can absorb it through the leaves . I would only do this at NIGHT time because you dont want your leaves to get covered in a gross film and only do it every 5-6 days . This will put a quick end to that CalMg deff you feel you might be having . I hope this information helps you a little bit ! -Happy growing !