Hi all looks like I've had my led''s to close to my plants and had very small stretch. lights are on 20-4 now and coming up to 6 weeks old if I drop my lights down to 18-6 do you thing this would encourage them to stretch up a bit led''s are now 90 cm/ 3 foot away and there Mars ll 2 1600w plants I have the issue with are dp auto extream.