depends on how tall u want them to get? u can top them and they will bush out and have many main colas when in flowering dont forget they get 2-3 times there size. i water every 3-4 days every 2 feedings with nutes then the third watering with ph'd water at 6.5. not sure if u understand that, i water with nutes wait 3-4 days water with nutes again, then wait 3-4 days then give them ph'd water. also when giving nutrients read the label it will say 1 tblspoon do a 1/4 of that till they build up a tolerance, if u notice burn flush them with 3times the ammount of water as there is soil.

also note when ur in veggetative state u want lots of nitrogen to help with new growth!

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