White widow skunk DWC Clones

Doing lots of defoliation every week to keep up with the dense growth it keeps putting on, I've gotten it nice and spread out though and haven't topped for a week so I'm flipping the lights to 12/12. There plants are starting to consume a massive amount of water and nutrients a day in the dwc buckets. Currently a half gallon a day per plant. It will be close to a gallon a day per bucket soon. I did a complete water change last week and I should probably do that again next week since the useful volume of water each bucket holds is only 4 gallons.