Theres nothing wrong with that at all, you will kep the plant in flower and you will increase the yield. If you take it above 14 though then you start getting into veg territory.
well i know from experience that once you start flowering with 12/12 over the next two weeks you can gradually increase that to 14/10 and this will increase yield but extend the flowering period, any more light hours than this in a 24 hour period will set the plant back to veg. If a flowering plant is left to reveg for too long it will loose its buds
interesting i may try that,you really should drop the non,part of your moniker,and that photo is a bit distracting,it somehow takes me longer to read your posts,i keep having to go away for a while,i am one sick puppy i know""""