New Grower, Any Advice and Input Welcom

I happened to find a seed in nice bag of some KB. No clue on the strain but I'm starting to think it's an indica because of the short stance. She is just 2 wks tho. I put the seed in a ziploc and had a 2 inch root the next day so I had to rush a grow room together. I started out using CFLs and switched to a 150w HPS on day 10. I also covered the walls with mylar on day 10. I have a pretty good picture time line to check out. I'd like to know how she's lookin at 2wks because I've never tried to grow so I have no clue if my progress is good or slow or what. She's living under my stairs in a closet so I don't have a lot of space to work with. Some of the fan leaves started drooping and yellowing so I clipped them and the new growth is looking great I think.
She has had no nutirients of fertilizer of any kind just a supply of koi fish water to drink. I did use a small amount of NEEM PV because of a gnat infestation and I think that might have caused the yellowing. Thanks in advance for any help and advice y'all can give.

Pic 1 is Day 2
2 is Day 4
3 is Day 6
4 is Day 8
5 is Day 9
6-9 are Day 10
10 and 11 are Day 12
12 and 13 are Day 14
She is 15 Days Today

Fish water is RICH in nutrients... make sure to check pH though. If you want to stay organic & super cheap.... top the soil off with some used coffee grounds for some Potassium. If you have eggshells, crush some up, mix em in the coffee grounds, wet it with fish water untill damp and let it "cook" for a few weeks.

Keeping my fingers crossed that you have a female.

Don't over baby your plants. A lot of people "love" them to death. You need to get them on a nute regimen. I water small plants with 1/4 strength nutes and slowly increase the dosage. They are looking fine so far.

These were taken last night. She's short and bushy with a lot of branching near the bottom. Her top leaves are starting to get some yellow spots. Could these be from heat or from a deficiency of some kind? All the bottom leaves are looking good. I use a 150w hps and it's about a foot above her. The temp stays right around 82 degrees. Thanks for any help guys. She's 3 wks tomorrow.