yeah the 18 should be fine. I don't think you're going to see much if any difference doing a 24 hour lighting. I simply do it to avoid timer failures but thats because I tend to run into cheap timers from time to time.
redaaron Reviewed by redaaron on . Need help with a few Questions my room is painted a flat white , should i just keep that or cover it up with Alum. Foil ?? And should i keep my lights on for 24 HRs during Veg (Will this hurt the plants at all??) or should i use the 18/4 Cycle ?? Rating: 5