Tiny (.75") week old Easy Bud from Royal Queen Seeds. Stunned Growth???

Planted an Easy Bud (autoflowring plant) from Royal Queen Seeds exactly one week ago, but the plant is soo tiny. it's barely .75" tall. its been at about the same height since day two. there seems to be slow growth (progress in pix). and the leaves seem to be getting darker everyday. also, notice the purple stem with the white hairs....
would like to hear some tips from you experts out there. do you think there is stunned growth??? here are my inputs:

* I water the whole pot with 330 ml bottled (drinking) water every 48 hours.
* PH is at 6.5. soil is (25% potting soil, 25% perlite, 25% compost, 25% peat moss)
* Plant is 4" away from the lights. (69 watts cfls)
* temps range from 70-85 (night, day). sometimes reaching 90 when I have close the vents for more stealth.
* Had a humidity dome for the first 24 hours, but removed it fearing that it would lead to fungus.


here are the pix:
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stop watering until it gets a little yellow it will force out roots then water it and it will grow upward

Sorry for the picture.but this is a seedling at 1 week after it got bloom nutes.People say don't feed plants until at least 2 weeks of growth but really seedlings need N-P-K not just water and then after just N. Still in party cup and a lil stretched from hps,i usually veg with mh.Nutes @1/4 strength shultz bloom plus 10-54-10 .Try at your own discretion!!!




the plant now at 24 days after losing a few leaves tot he light a week ago

I think I'll take your advice nizza and stop watering for little while.
Also, here are results from a nutrition test I just did. seems like I'm low in Nitrogen....