The Megagarden is simply a trade name for Hydrofarm companys small E&F system. It measures 22"x22" and is a self contained reservoir/tray combination system. The reservoir holds 7-1/2 gallons. The tray supports fifteen square planters, but is much better suited to growing nine or less plants sog style.
Hydrofarms larger version of the mega called the ebb&flow
Hydrofarm also makes a larger version (44x26" w/25 gal res) of this system which they call the Ebb & Flow system. Several ready made hydroponic system mfrs make systems which are almost identical to the Megagarden in form and function.
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