Hi there I am using 5gal smart pots with promix bx im using cal mag and the recommended dose of v1 and v2 how often do I feed these girls.note: i water just about every other day
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Its really up to you.
Think about it like this, the lights are on for half the day or more so you dont want your roots to dry out.
Feeding every two hours, every other hour, or four to seven times a day, is ok as long as you feed when lights are on.
Maybe this will help because it also depends on your medium.
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Great community help 
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