diy small aquaponics system
The 25 mm (1 inch) Funnel Bell Siphon was the first siphon that I made after few months of trying out various siphon style to get a good water control of the aquaponics growbed. It is reliable in its operation and has made my aquaponics quest a breeze.
Since then I had gain more and more knowledge in the operation and tuning of the siphon making the 15 mm size standpipe a viable option again.
Few days ago I made a Crayfish tank and I decide to make use of the 15 mm siphon, this time it is a StrainerBell design to be use with the tank for water circulation purpose as in photo below.
Im making another 15 mm siphon for my Ornamental set which currently using 20 mm siphon. The main reason why I am keen on trying this smaller size siphon is only for one reason that is for energy saving. Due to smaller inflow requirement, this siphon will be able to operate with a 5 watt pump, this small power requirement is ideal if we want to be off grid and operates aquaponics with solar energy.
Smaller water inflow also means that we may be able to get the siphon to operates with water from an airlift pump which we could powered by compressed air from a hand pump reservoir or just a tiny aerator which consume even less power.
same like the 20 mm, it is just smaller. The extender tube is a 25 mm size then a 25 to 15 mm reducer to do the venturi.
Capped and ready to go.
I use as smaller pump, 20 mm siphon uses 1000 liter per hour pump, this 15 mm siphon uses 500 liter per hour pump.
Even at 500 liter per hour with 2 ft head, water inflow is still too much for this siphon. Above pump is rated at 7.7 watt, from my test a 5 watt pump is sufficient. This 15 mm siphon can do growbed size up to 10 sq ft.
The energy requirement is 5 watt for each siphon, the electricity cost is calculated as below for Malaysian electricity tariff;
Siphon top part is fixed in its design and tuning it can only be adjusted to set water level, what left is the outlet to be tune. Like a two stroke bike, the entire air path need to be tune for optimum operation, which will include air intake right down to the exhaust chamber for balancing the airflow.
Siphon is the same, we will need to tune it making an optimum water path and since the inlet part is already fix whats left will be the outlet part to be adjusted to suit. As a baseline design, standard double elbow arrangement works in most cases, but it has its limitation, if water inflow above or below the baseline for the siphon, the outlet needs to be modified.
Below are various outlet style that I am trying to get the optimum operation with water inflow more than what is needed.
Few more as follows, it is for illustration only. Each of these will require a long explanation of why it is that way.
Each outlet is tailored to specific condition of what we want to do to the siphon, either to reduce noise, to increase aeration or to compensate for too much or too little water.
There is more that the above design of outlet that I am currently testing for this 15 mm StrainerBell siphon and so far its holding fine after few hours of operation. Now let see whether it can still hold after six months.
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The energy requirement is 5 watt for each siphon, the electricity cost is calculated as below for Malaysian electricity tariff;
- 5 watt x 24 hrs x 30 days = 3.6 kwh which will cost about RM 1.30 (USD 0.42) per month of operation.
- It work out that on average this 15 mm siphon requires 1/2 watt of electricity per sq ft of growbed space.
Do you find information about diy small aquaponics system are you looking for? If not, below may help you find more information about the diy small aquaponics system. Thank you for visiting, have a great day.
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