Sentinel, as long as the temp doesn't fall below 55°F it should be ok.. is your floros at 2 - 3" above the plants? if not please do because they aren't getting enough light. Lack of light = stretching & slow growth

Hope this help!

Happy Growing!
mafia819 Reviewed by mafia819 on . Why are my plants so small. I have 6 plants that are 2 weeks old in peat pots with pure soil under 18/6 fluorescent light. 4 32 watt tubes 2-3 inches away from top. Rating: 5