Seedlings leafs have turned brown in areas and tips curled up.

Coco coir is my choice for beginners. I've used it for 4 years and never overwatered, never had pests, growth is faster. Soil has its advantages but for someone new coco is my choice. It's not too dear. On a budget is one way but I've seen some newbies wanting to spend too little To do that a lot of research on homemade stuff is needed

Acided soil. u have too much hp

i'd try another soil ...

@Roberts, I’m growing in kelloggs organic patio plus soil since I was on a budget and saw multiple people say it was great for growing on a budget. As of watering goes I’ve been giving them a small water bottle size amount every 2-3 days.

@Newbie87, No not on full power my light has a veg and bloom switch so it’s been on veg the whole way

You've an extremely rare def mate. It's even more rare at this stage. Molybdenum was the 1st thing that came to mind when I seen this Yes its more of a bloom issue when it is an issue. But, I've read it hitting young plants. And stunting them That will have a real hard time with chlorophyll process. So, maybe I'd do another. It is fixable. Have a read up about it. But, you'd really be best just redoing.

I am not sure what your growing in or how much your watering etc. Looks like it may be a root issue, or a ph issue. Hard to pin point with little information

You're not running it on full power though right ? Get rid of the fungus flies

I just joined so had to start my diary 20 days into grow but haven’t gave the plants any nutrients yet, just water. I had my 600w (264 actual wattage) LED light hanging about a little over two feet and raised it to about 38 inches which is 2 inches higher than the lights recommended height. Thank you for your response and help!

Start a diary. Also, don't feed until 3 weeks old, the soil has enough nutrients before then. Since I don't know what distance your light is from the sprout, I don't know if a contributing factor.