Nutrient burn or deficiency?

Cant say it's not overfeeding when tips have clearly got dmg from running high ec. It's as distinctive as magnesiums interveinal chlorosis. Most likely your watering habits are leaving salts from every feeding in the substrate, each time you reapply new water and fert not 100% of what you feed is being used creating surplus of unwanted salts. 98% of minerals that uptake to a plant come from the water solution other 2% are directly from soil particles. Feed what she needs when she needs, make sure your not letting salts build up.

Beginning of a calcium deficiency with an advancing magnesium deficiency. Does not look like over feeding symptoms to me. Start a diary!

Hey growmie, looks like classic tip burn starting up, nothing major yet, just the plant saying “okay that’s enough nutes for now”, I'd dial it back just a touch or alternate feed/water. Leaves look otherwise healthy and green, so no need to panic. Keep it up! ✌️🔥

Looks like mild nutrient tip burn – not unusual, but worth watching. With BioBizz it’s generally hard to overfeed, unless the base soil is already rich (like a hot super soil). If you’re using BioBizz soil too, you’re probably safe. But if it's strong soil + full-dose feeding + limited light, that combo can cause slight tip burn.

Hey there don’t worry to much if your plant is in flower then garentee the soil ph is to low right now. When you water check the ph of the run off water it will probably be down below 5 If ph is super low just run a couple gallon of plain tap water if you tap water is around 7 to 8.5 that will bring the ph up some