Build an ebb & flow type hydroponics control system
here for a pdf of the instructions from our
Ebb & Flow Control Kit.
Ebb & Flow Control Kit provides the basic components
required to guide you in assembling a control system that will move nutrient-enhanced
water from a reservoir into a control unit and back. New for 2011, our kit now includes a 24 hour timer that allows you to
as many 15 minute watering times as you like. The 2011 kit has easier
instructions, a large project box that is easy to assemble and pre-drilled
for all required openings, all the connectors and wire you need, and even a
GFCI cord for safety.
You can purchase our
kit or purchase the individual components of your choosing.
Either way, the instructions for our
Ebb & Flow Control Kit will guide you
in building the control system shown below:
How it works
The control system uses gravity and two pumps to move
water/nutrient into and out of the planters via a control container. Unlike a drip-type system, water floods the plant
roots from the bottom and then is actively pumped out. It's
essentially two systems working together:
Fill-Up System: fills the pots with
For a set series of watering times, three float switches
(two active and one backup) control the
reservoir pump and keep the control unit full as water disperses via gravity
to the pots.
Drain-Out System: drains the water back out.
The drain-out system is on at all non-watering times.
Two float switches pump water from the control container back into the
reservoir as gravity moves water out of the pots and into the control
Ebb & Flow System Options
We are not hydroponics experts, so
you'll need to do some research on the internet to determine certain things
about how you want to manage your ebb and flow hydroponics set-up, like:
- pot arrangement
- attaching fittings and tubing to the pots
- correct ph levels
- growing media to use
- watering levels
- watering cycle times
- reservoir and pot sizes
- how to "nest" pots so that you can remove plants
without disassembling pots
We are experts at showing you
inexpensive ways to control water levels using pumps and our economical
liquid level sensors. Using our components or one of our aquahub
Ebb & Flow Control Kits, you can build
your control system for a fraction of the cost of ready-made
For more general information about ebb and flow
hydroponics try Googling "hydroponics controller unit assembly"
without quotation marks
and looking at the first few natural search results - you should see
some additional illustrations of ebb & flow systems like the one discussed
here that will help with figuring out the factors above.
here for a pdf assembly instruction guide.
PLEASE NOTE: This do-it-yourself project involves household
110 volt electricity, which, if mishandled, can cause shock or death by
electrocution. Do not attempt this project if you are not comfortable
working with electricity. Proceed with this project at your own risk.
No system is
100% reliable. Float switches, relays and
DIY set-ups can sometimes fail. Use common sense when sizing, building and maintaining your system
and think about the consequences of a system failure before building it.