Quote:
Originally Posted by Amigatec
As a rule of thumb, I figure the size of my E&F tray and make the res 2 to 3 times larger. My E&F tray will hold about 5 gallons with the growrocks in it, my res is an 18 gallon tote. I add about 15 gallons of water to it.
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Great , that helps. Thank you.