I'm really new at this but have been reading non stop since long before I started. So perhaps someone can give me some back up or a safer method. Ive had to do similar and what I did was alter the on off time equally by a half hour till I was in sink. I do it that way mainly because it seems extra safe from what know. I'd try an hour a day even just to get it over with sooner. really your giving them the same light on time. just sneaking out some sleepy time. I'd be interested on some more opinions my self on how much this really maters. I don't know how hard it is to make them hermaphrodites. Ive read both that its easy and hard. I'm thinking genetic background has a fair bit to do with it.