I have been growing low ryder for 1 week under 125w fluorescent The room temprature is always about 65 -70F But so far all thats grown is two very small leaves. Not sure if that is normal. I am growing lowryders and it says from germination to finish in 6 weeks. I am giving them 16 hours of light a day. The only thing missing from my grow room is ventilation / fresh air. Should i add a fan in there and open the windows too let in a daily change of air?