New Tx Grow - Water Storage

[SemperFrmr]

I have an indoor grow starting with 50 plants with room to go 100/150. I have done smaller grows, but the size is confusing me as to what size Nutrient tank I need. I plan on on a drip system with one nutrient tank and one clean tank to supply drip system grow in rockwool. I know ideal would be fertigation but $$$$. Does anyone have suggestions on what size tank I need for either or both?

Thanks for the assistance.
S/Farmer

 

[Dub_City405]

100g to 200g. Should last a week worth of feed. To make new feed each week.