I agree 100% on the flush thing, no need to do it as far as taste of your buds goes....but there is a important reason to flush and that is buildup wich can cause PH imbalances and lockouts....if you must start your nutrient regiment on week 2-4 then i would recomend flushing every 2 weeks to remove buildup...
i dont recomend starting feeding that early..in Ocean forest an average 3-4 ft tall plant should be completly sustained by the nutrition in the soil...."nutrients" or fertilizers are just another big hype in the canabis growing community,
most comercial farmers ammend thier soils once before they start growing for the season and do not ever fertilize again (for that growing season)
fox farm ocean forest comes pre amended out of the bag...theres no need to add any fertilizer to that soil unless your plants say you need it.....and they will tell you...by starting to turn a nice light lime green is color you will quickly see its time to add a SMALL amount of nutrients and then probabally continue a regiment feeding every 2 weeks untill done...
MOST plants will thrive in FFOF for most if not all of a grow, again this nutrient business is all just a hype created by stoners who got baked and got the munchies, ate a bunch of food and got fat, related this with thier plants and thought if they feed thier plants more they will get fat too.....FAR OUT MAN......WRONG!!!
I am not saying you dont need to use nutrients, im saying you need to watch the plant and feed it when it needs to be fed....if you feed a plant nutrients it dosent need its not going to use them, then they will sit in the medium and cause buildup wich will cause PH issues wich will cause lockout and your feeding a plant just went from caring for it to killing it..
now you have 100 more things to do to fix a problem created by adding nutrients to a plant that didnt need them..if that plant looks good, is nice and green and growing well just leave it alone!!!!
most growers i see on here who end up with all these issues, end up with them because they fell into this nutrient brainwash and kill the're own plants..IF ITS NOT BROKE DONT FIX IT...meaning if the plant looks healthy and is growing well then you dont need to add nutrients, they will NOT make it grow faster, they will NOT make the buds grow bigger...if the plant needs to be fed it will definatly tell you, otherwise leave it be...
think of it as a person..yes more food will make a person grow fatter, but its a unhealthy fat..we are genetically designed to grow a certain way, to maximize a healthy growth we need a balanced diet and we dont need to over eat...same thing with a plant..too much food can be just as unhealthy for a plant as it can be for a person.
sorry i typed so dam much...you really really need to learn about what your doing when you add "nutes" rather than just hop in a line of stoned drones and follow suite...there is no specific time to start nutrients...and if you can keep from adding them at all that is what i recomend....maybe a 1/2 strength feeding of a bloom nutrient mid way through flower and that should be about all you need.
i have grown about 10 grows now and have found my best results yeild when i do nothing at all..except water and i usually grow one plant in a 30 gal tote so i water the plant maybe 2x in the first 8 weeks (6 weeks veg) and then prob another 3-4x in the last 6-8 weeks (they drink more in later stages of flower because the plant is larger it needs more H20 to stay hydrated or w/e you call it.
i add a small dose of bloom nutes usually 2-3 weeks into flower and then leave it the hell alone to do what it needs...if the plant starts showing signs of deficiency i will feed more and i feed right up untill chop( IF NEEDED)...well a week before,, i mean its just wasted money feeding it then chopping next day.
advice
K.I.S.S
dont fix what aint broke