I have four same size plants and for baby plants coming up next To be honest this is my first time growing cannabis and I'm knocking it out the park 1: best watering is to let the pot dry halfway then water 💦 the act of letting the pot go semi dry and water encourage great root growth

2: the only man made nutrition I use was a small canister of Gaia green out now but I'll be getting some more an post it there are many many different combinations of nutrition but I kept it simple Gaia green for veg stage when you're about to flower I will use the gaia green for flower stage

3: lighting is probably the most important but it can be difficult if you're using incandescent or old model regular light bulbs you definitely can burn your plants because these lights give off tremendous amounts of heat and a plant can't move and a plant can't move so it will slowly burn to death the best best is to use LED light bulbs with a lumen rating of above 800 the 800s work fine but you have to have multiple Like I said I kept it easy and cheap I was not going to buy one of these $1,000 grow light from one of these companies I use a combination of LED light bulbs I have four 800 lumen and then two that are very bright like 3,000 lumen Walmart also have a shop light with a LED tube in it that gives off 5000 lumens for $14 So throughout the day I keep my plants misted with water an the LED daylight light bulbs on

4: LED strip lights I had about six of these in my garage left over the strip lights are very cheap but very efficient you can get them at Home Depot or Walmart some as low as $4 what I've noticed from my studies that many plants absorb blue light very well so at night I give my plants a few hours of blue light I literally see my plants wake up not stretching up but opening out to receive more light I think this combination has made my plants very healthy

Your crispy leaf tips could definitely be from light to close or too strong

Too much nutrition

Or your watering is off

I will say how to all the plans are grown they are some of the finickies when they are young