you need to have enough water/gallons in rez to allow you to fill e&f table to desired capacity with about 5 gallons added for ppm control and evaporation/depletion control. You don't want your plants to drink the solution and run your pump dry.
So:
table capacity +
5 gallons= desired rez solution in gallons.

Use pure blend pro as directed, but monitor ph, because for some reason their accelerated bloom and veg formulas are not ph buffered.

It is kind of a trial and error method when you build your own. Keep a mop and bucket handy. LOL Hope this helps. Peace
latewood Reviewed by latewood on . Nutrient Help Hello, I need a little assistance in setting up my nutrients in my new flood and drain. Im using Botanicare Pure Blend Pro Grow and the Bloom(soil formula cause its better im told). I have a 20 gallon reservoir. How many gallons of water should I add to the reservoir to feed 6 to 8 plants? The seeds are in day 4 in jiffy pellets at the moment but will be going to 5.5in net pots with hydroton rocks as the medium. My flood tray is 2 x 2 x 5in deep. I will be adding nutrients based Rating: 5