Feeding/watering question

Hi fellow growers
This is my first growScreenshot_20161027-184613.png Screenshot_20161027-184613.png
Ok so i have two stunning ladys beginning there 4th week of flower tommorow.ive been feeding them the canna nutrient line using the feeding programe provided by canna online and theyre in canna pro soil.
Theyre really really hungry ALL the time lol.ive been feeding them using the heavy feeding chart at 1800ppm (to date.i will continue to climb ppm untill 2 weeks before harvest) and they have been requiring this every 2 days and when i test runoff the ppm is 200 or under.with all this feeding and no water i thought today ill just give them water with a rihzotonic and boost mixture.my reasoning for this was as i understand it they store nutrients in there leaves so if i do this once a week untill my last 2 weeks before harvest (then ill do this every feeding) itll help them use some of there stored food plus save me using up nutrients and help to produce a nicer cleaner end product.can anyone tell me did i do good?or have i opened a gateway to defficiencys.many thanks in advance.
 
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