GatewayGrow Looks like the beginning of a nitrogen deficiency to me. Usually starts around the outside and get more yellow over time. I wouldn’t cut it off but that’s up to you it doesn’t make a difference I would just want to keep an eye on it to see if it continues.

Dcap0607 You shouldn’t have to use calmag if you’re this early on in veg and you have deficiencies in your plants. It looks like it’s getting root bound from growing so fast. Bigger pot might be needed now. Maybe 3 gallon or just go straight to a 5 gallon. I went from red solo cup straight to 5 gallon and I’m getting pretty good results. Steady growth. I’m a first time grower too. I watch a lot of YouTube lol

Guitarist I have had serious plant health issues after using Neem oil. I was told it’s more of a leaf polish for office plants. I use BT spray. Available everywhere, always make fresh batch, use immediately, don’t overuse. I also use worm tea, look it up, it has done the most for me overall for any type of plant. Hope this helps, I use soil, not hydro.

424jaydog Your gold soil has no nutritions.Now you are developed need more soil and nutritions or good start up with nuts

BassLineBuds You need to cut the tips off the leaves anyways to redirect energy toward root growth, so tips of leaves being brown shouldn’t matter at this stage. You might as well get a big microscope and check bottom of leaves for bugs because brown tips can be a symptom of some species of mites, among other bugs. Also what is the temp in your room?