Thanks for all the input everyone!
So I was seeing the start of what looks to me like nutrient burn, some of the tips of new growth were starting to yellow, so I started topping up the rez with plain water (ph 5.5) instead of the 1/4 strength nute solution I have been using for top up. I ran with that for a week without it getting any worse and then on sunday when I did my weekly water changeout I mixed the nutrients at 20% less (just the AN M/G/B, i still kept the 1ml/L Cal-Mag I have been using). I noticed last night that since my rez change the symptoms are getting worse, now I am unsure if it is burn or possibly something else. I have noticed a bit of clawing and leave curling down a touch at the ends which I think would indicate over feed, but it doesnt make sense that symptoms are getting worse after decreasing the feed. I really need to get myself a TDS meter.
View attachment 1003998 View attachment 1003999
( Pics taken through a pair of blurple compensating sunglasses, haha)
Any thoughts?
Maybe too much Cal-mag? My water has around 60ppm Ca and 20ppm Mg according to the city water report and I have been adding additional Cal-Mag as it seems to help keep my water stable. I've read that the Ca in hard water is not able to be absorbed by plants very well and can actually decrease the available Ca that can be utilized? The other reason I've been adding it is one of my plants has been iron hungry it's whole life and the Calimagic I use has some chelated iron in it as well which that plant seems to really like.
I gotta get this under control before I have to leave for Texas, luckily the 6 pallets of equipment I shipped to Tx got held up in customs so my trip have been pushed back untill the shipment gets through.