New grower, sickly plant.

Hi all,

First up, I'm a new member n grower so please excuse my lack of knowledge.
I've checked the 101 already asked questions and the answer I was looking for wasn't there.

Recently I germinated and planted a bagseed just for the fun of it as I've never been able to get one to work before. It all started off ok, the plants afew weeks old and about 15-20mins high.
A few days ago I noticed a bit of yellowing on the edges of the leaves, and the bottom leaves start to wilt. I've attached pictures of how it looks atm.

Just wondering if anyone with more experience can assist and let me know what's going on. It's an indoor setup, in a large plastic tub lined with foil, lights, a computer inlet fan and exhaust hole for the moment. So I know its not from a lack of heat/light, i get the feeling it may b a nutrient deficiency, but no idea what type or how to solve it.

Have you fed it ?what type of soil are you using?

the new growth looks good. i'd do nothing and be careful not to over water and that young stage. GL

R u feeding it yet looks like ph fluctuations in my opinion but its not bad id leave it alone

Thanks for the response guys. The soil is a bit of a long story, I had 2 bag seeds. The one I tried first died in the ass as soon as it went into the soil I purchased. I can't remember the brand but it obviously wasn't very good.
Second seed I followed a friends advice and used this hard soil disk, pour water over it and leave it for 5 mins and you have some amazing soil for the seed. Tested ph before planting and it was perfect. The brand was Mr.fothergills growing kit, just tossed out the strawberry seeds that it came with and used the soil disk.

I haven't fed it just yet, but from the reading I've been doing I think it's getting close to feeding time at the zoo. I purchased a product by manutec called "trace elements" which should help with any deficiencies it may be facing or come across in the near future. As for ferts, I don't really know what I should be purchasing. Any ideas?