is 20 gallons enough for a 4' x 6' flood table?

need to figure out what size gallons i need. any ideas?

get a 40 gallon 20 isnt even enough for my 2x4

ahh thank you.

no problem happy growing

15 handles my 2 2'x3's at the same time. 20 when the plants get bigger.

Beagle said:

15 handles my 2 2'x3's at the same time. 20 when the plants get bigger.

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man thats crazy do you fill the trays with hydroton cause with my pots it takes more water as there is more volume to fill i guess it all depends on the medium.

im using 25gal rez for a 3.5 x 7 table with 30 2 gal pots filled with hydroton and then fill the tray with more hydroton

It depends on how you are setting up the feeding system. If it a true flood/drain you like i use, you need a 70 gal. If you are using a drip system a smaller one will do. Look up a formula to convery cubic feet of the table (4'x6'x6" or 8") to gallons.

Yeah recomended is 70 gal but you could probably get away with 50

https://www.rollitup.org/hydroponics-aeroponics/353164-how-figure-out-resevoir-size.html

Here is a link I started a while ago that might be of some help.

drgreentm said:

man thats crazy do you fill the trays with hydroton cause with my pots it takes more water as there is more volume to fill i guess it all depends on the medium.

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Yup!
Without the hydroton, 15gallons won't even fill 1 2'x3' tray.

i was considering using hydroton.

Hydroton obviously displaces alot of water.

The argument against filling the tray with hydroton is mobility. Some people want to be able to move their plants around.
I for one will be using a SCreen Of Green technique...once you train your plant under/in a trellis, you don't want to move it anywhere IMHO!

So it depends on what technique you plan on using.