Depending on the size of the pots you have the plant will usually double when flowering. I waited til the plant stopped growing up and starting filling out. Then i switched the food and change the cycle to 12/12. Now my buds are coming in, i got 3 pure kush, 3 sour og, 4 0g. this was my first grow but did a lot, lot, lot of research before so i know a lot more then some the experienced growers i know. I just need more experience. I'm using 5 gallon buckets next round.