Help! Leave Tips turning yellow/tan...

I'm a first time grower, so im sorry if this is common knowledge or an easy fix. I recieved a clone from a friend 8 days ago. It had two bottom leaves as well as newly developed third top leaf. After 5 days of transplant, the leaf tips of the two bottom leaves (which rest on the rim of the clay pot) started to get yellow spots and now the whole tip of one is tannish colored. I thought it was beacuse the clay pot was getting to hot and burning the leaves, and have raised the lamp.

I only use a 75watt neodymium bulb and am growning in organic MGro potting soil and have not added and extra nutrients. Everything else is growing really well I think for only being a week since transplant.

Well what do you think the problem is? I hope the pictures help. Thank you.

AnnEmal

over feeding feeding.
i wouldnt be feeding it all the time, if the clone has gone into new soil, they will be food in the soil for a few weeks.
what ever your feeding stop or cut down.
let the plant get a bit bigger b4 feeding, other wise all the plant will go like the tips.
also have you got a fan.
remember water every other day, and feed every other water when you get to 12/12.
i feed 1 time a week in vegg after 4 weeks vegg.

byw welcome to the site, any better pics, goto the flower symbol on your camera its better for plant pics, thats what its for, marco mode.

I hope these are a little better, atleast they're bigger. And I am not adding any fert. Only whatever is in the soil to start. Thanks for your advice!