thats all you can do at this stage mate, little fresh air, warmth and lots of nice light.

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when i was young i was quick and bright,now that im old i what the fuck was i going to say

yea thats what i figured lol im leaving the grow room (besement) door open for a while to help get fresh air down there. but thanks for the all the advice

Keep the lights as close as u can.. your plant looks to stretched out..max temperature on leaves should be 35°C max (if air is mixed with fans) Room temperature should be 29°c or lower (above 30°c photosyntheses (light used to create cells, don't know exact english term) is slowed severe)
Also the purple is probably magnesium shortage because its the upper part of the stem.. during growth plants need magnesium in huge quantities.. Also 20 days is way to long should be much bigger by then normally.. Do you give any nutes? For the magnesium shortage here's one solution: Google "no mercy supply - CO² tabs"
And see if u can find this product.. its main purpose is to give the plants a CO² boost by combining CO² with H²O (you put the tablet in the water and it gives the water CO²) This really works!! They used simular tabs for years in aquarium's because water plants ALSO need to absorb CO² for photosyntheses or otherwise they can't grow.. this proves plants can absorb CO² trough water if its combined with it and in aquariums there's almost no C0² refreshment in the water... So some alert growers at no mercy supply got to this brilliant idea to use it on plants with nice results, but! Because of the extra supplied CO² the plants started overgrowing resulting almost always in magnesium shortage so they added a good magnesium portion to the tabs.. an this is nice because I overdose these tabs every time I get magnesium shortage.. Plants can't get to much CO² there are simply no negative effects..
really they are a nice investment they cost less than 15€ in grow shops in Netherlands..
Don't know if there available in US..?

well im kinda strapped for cash ( no job...) haha is there any thing that might b laying around the house or at a local store that has magnesium in it that i can use for the plant??

well i just checked on them and i noticed a couple little yellow and brown spots on 2 of their leaves
ill try to post pics soon, i kno you cant really tell me ne thing wit out em haha

epsom salts are cheap and is magnesium,think half t spoon per gallon.

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when i was young i was quick and bright,now that im old i what the fuck was i going to say

alright i think im goona try about a 1/3 t spoon at first cuz the plant are still pretty young and weak. but does any body know of any thing else with other nutes in it? jw in case i need em in the future