Problems with lower leaves.

This is my first crack at indoor growing. Bought a phototron for cheap, just waiting for the three other lights to arrive in the mail. Its five weeks old, might be growing a bit slow, but 120w of light is good enough for it now, right?

Anyways, the bottom two rows of leaves on my white widow are kinda dry and are warped/curling and one has a yellowish spot on it. The PH of the soil is 6.5, maybe a bit higher. The water's PH is fine too, Im using brita filtered tap water. Im thinking I might be over feeding it. I just transplanted it into a 1 gallon container which it will stay in but when it was in its smaller container I was feeding it with AN Mother Earth Compost Tea and I thought it was a good idea to mix it a little stronger than the jug recommended. I noticed the problem about 2 weeks in so I diluted the tea more and only fed it every second watering. The problem doesnt seem to be spreading to the upper leaves but the lower leaves still havent changed. Im using sunshine soil that I bought from the grow shop, doesnt seem to be any plant food in it at all so I made a mix that was a little more than 1/8 worm castings and a little less than 1/8 bat guano. The soil might be too good at holding moisture too, what problems could come from that?

Heres some shitty phone pictures. Would of used my Nikon but it doesnt like my computer for some reason.

Pictures are pretty bad but you can kinda see the warping on the second row of leaves along with the spot. And the bottom row only has one serrated leaf on each side and those are a little bit more dry and warped and curling downwards. You can see the spot in the first two pictures, its in the middle of the leaf.

What is the temp in the phototron?
I can't remember if those have a built in fan at the top or some kind of air circulation.

Those nutes might be a little hot for a young plant.

How long since you transplanted them? It could just be shock from bad handling when transplanting, which could last up to 2 weeks to fully recover.

I transplanted it yesterday. Im only guessing the temperature in the phototron is something like 25 degrees C. Its 21 degrees throughout the rest of the house and the lights make it a bit warmer inside. I got one of the stronger computer fans laying flat on the main air vent at the top of the phototron to draw in air from the bottom. Its advertised that air circulates through it naturally but a fan wouldnt hurt.