Setting Up A Simple Aquaponics System

How to setup an Aquaponics System ? This post I try to briefly explain a very simple setup, its important to start simple so that we learn and progress as time goes by.

It is not advisable to start with complex or large system. It is also ridiculous to start with a tiny system, it’s only meant for show case and school projects.

Size of Fish tank and Grow beds are the two determining factor in Aquaponics, in theory the size of grow bed is directly proportional to the size of tank used.  A 1:1 ratio is a rule of thumb, however smaller grow bed to tank is acceptable but not the other way round for obvious reason where insufficient water available to grow beds and fish.

What Tank and Grow Bed size to use ? Try : Here

In the illustration I recommend a 100 gallon tank and a 2’ x 3’ grow bed for a start. This size is an estimate but it’s roughly there.

Simple 2 Growbed Over Tank with Bell Siphon

It is best to start with a simple water management system, shown above the raised grow bed using a Timed Flood and Drain or Continuous Flow Flood and Drain setup. This is the easiest to make and the least can go wrong. As you progress, this system can be adapted to make use of more growbed or fish area utilizing various method of water management with minimum changes as example in photo and diagram below.

• Timed Flood and Drain make use of stand pipe and leak (drip) hole
• Continuous Flood and Drain make use of a Siphon.

More Growbed Over Tank with Bell Siphon

Here is the sketch.

For a start, I do not recommend any system with lots of moving parts or those with Sump Drain reason being the extra pump and parts is just additional item to fail or need maintenance. It is too much for beginners to worry about. 

In above diagram, Timed Flood & Drained or Bell Flush system, water are fed to the grow bed by using a single pump, estimate about 800 ~ 1200 Liter/hr 14 ~ 20 watt power rating (on Timed Flood and Drain you can use smaller pump), and water returned to fish tank are by gravity. A tiny drip hole is needed in the stand pipe on both this methods, this to ensure during pump “OFF” operation water are drained slowly, to promote the Aquaponics process.

If 25 mm siphon is used, a recommended 1000 l/h water flow for each siphon for its operation. If you have 2 growbed with individual siphon then its 1000 x 2 l/h pump total capacity is needed.

Bell Siphon

Growth medium use normally gravel or Hydroton (LECA) which is popular now, roughly 10 ~ 20 mm in size, not too small and not too big. 

Gravel Growbed

Hydroton Growbed

Small pebbles can cause water logged and bigger could be difficult to handle while planting. Gravel height should be about 1” above water level, or the stand pipe height initially,  with time as the plant grow this water level can be adjusted lower by using a shorter stand pipe.

Timed Flood and Drain, use timer that readily available, most people set it at 15 minutes ON and 45 minutes OFF continuously with some changes to cycle during night time. Bell Flush system, the pump is switched ON continuously during the day and switched OFF at night, however it can also be run continuously 24/7.

I switch OFF at night for power saving and noise issue, with pump OFF its advisable to have an aeration pump running to ensure oxygen are sufficient.

Below is a diagram of  CRAFTS, for installation where you need more growbed and fish area as you progress and don't want to add complex rearrangement but modular in approach.

What Fish to use… ?

For those that like ornamental fish, KOI is a good choice, common gold fish also another option. These fishes are hardy and able to tolerate varies water condition.

For those that want fish for the dinner table (like me), its depend on your area, over here in  hot humid rainy equatorial climate I recommend;

Barb families, Perch, Mansheer, Gourami, Tilapia (Red Variety is best).

I don’t recommend Catfish and Snakehead, they are predator fish and also they are air breather.

Air breather like Catfish, Snakehead and Climbing Perch (Puyu) will tolerate extreme water condition, as such you will not learn much on how to manage water of an Aquaponics setup.  However they are the easiest to get you started.

Fish like Tilapia is quite hardy, but they still need dissolve oxygen, so using these types of fish will make you conscious of water quality and oxygen content.

What Plants to use ?

Again depending on your region and whether you are using a Green house or not. Most leafy vegetable were grown, there are cases where carrot, beet and radish were use. Tomato is a common vegetable for Aquaponics.

On plant I leave it to your imagination.

Note :

• How to make a single barrel Aquaponics set : Here
• CHOPS is not a simple system but check : Here
• CRAFTS - Constant Return Aquaponics Feeder Tank System : Here
• Ornamental Set - A smaller Option : Here

This page will be revised over time to take into consideration various improvements on either methods or material used for Aquaponics.