Problems with leaves - is this of overwatering?

Use the feeding scheduled posted by AN for its ratios and then dilute it down to the desired EC. 1:1:1 equal parts. Plants still use N in flower its a myth that they drastically reduce the intake, but this tripart "3" feed is lacking in concentration to do much damage. GH trio is a better product and cheaper if you like the three part. This is from their web page on the product. Does It Matter Which Of The Three Components I Mix First? Very much indeed. Add pH Perfect®️ Micro to the reservoir first and mix it well. Then add pH Perfect®️ Grow, then add pH Perfect®️ Bloom. 3ml./ Grow 1-0-4 Bloom 1-3-4 Micro 2-0-0 2ml/ b52 2-1-4 bud candy 0-0-0 "says its derived from magnesium nitrate but AN says it contains no N??" weird. If my math is right and your using them at the ratios you say you are your final ratio is: NPK 3-2-6 : Not the bests but not the worst. if you really want to do some math you need to calculate it in terms of elemental availability. As some compounds have better ratios of the elements you want. Plus with NPK ratios in north amercia P and K are calculated as compounds not the element so the numbers are wack all over the board. Elemental like just N or P or K, compounds as in K2CO3 "potassium carbonate" or Mg(H2PO4)2 "magnesium monophosphate" Ditch the AN brand on your next grow: many MANY other better options for fertilizers out there that are more robust and balanced. Good Luck!

Wenn alle Symptome nur von dem N-Tox kommen, so wie massivetids das sagt, dann würde ich einmal gründlich flushen, den Topf wieder trocken werden lassen und dann bis zum Schluss kein N mehr geben. Blütedünger & Zusätze nach Schema.

@Terp1, @massivetids thank you very much Should i remove all nutrients or just Nitrogen (as i already did)?

Hello MyDearDiary, This is caused by a Nitrogen (N) toxicity. And I can also see why... stop giving the GROW nutrients!!! They contain too much Nitrogen for this phase of the grow!

Bei Überwässerung hättest du zwar auch trockene Blattspitzen aber die wurden sich nach unten biegen. Deine Blätter rollen sich nach oben auf, was auf einen Nährstoffbrand hindeutet. Die Braunen Flecken sehen tatsächlich nach Kaliummangel aus, aber da würde ich noch andere Meinungen abwarten.

@MisterAeroponics, thank you!

Starting the treatment for nitrogen excess and potassium deficiency. 1. I flushed the soil with 10 liters of spring water 2. Made a medicinal solution with high potassium content and minimal nitrogen content (4 ml/1 l Big Bud 0-4-4 and 4 ml/1 l pHPerfect Grow 1-0-4). 3. I hope everything is correct.