We will make some suggestions which you will have to explore for yourselves one step at a time. Start with research to determine which type of indoor aquaponics system build is best suited to your levels of interests and needs.
Once you have that, start looking for a supplier to find out more about the system and its cost and determine which type of system you want.
Supplies for an indoor aquaponics system
In order to create a small scale system, most needed supplies can be easily found in almost every neighborhood. Many of the required equipment can be created even by non-techies.
Weigh the cost of the system if you are on a tight budget as opposed to a system that can be purchased piece by piece elsewhere more cost effectively.
Calculate the configuration, size and mass of the system if you are going to place it inside an apartment or house. Talk to a civil engineer to determine if the structure can support that mass.
Decide which of the two systems, ready store bought, or separately sourced is best for you, and purchase all the pieces.
Arrange for transport since some of the items can be very bulky and other can be extremely heavy.
Arrange for an electrician if necessary since the aquaponics system will have to have a power supply to function, and clear the area where the indoor aquaponics system will be located.
If it is to be in an outside greenhouse, construct the greenhouse first since you will need to be able to move about freely on the inside before the system is built.
Begin construction of the system, and make certain every water pipe connection is absolutely watertight by testing the water pump.
Wash the growth medium thoroughly, and then spread the medium in the grow beds.
Order the fish you want to use in the fish tank and their feed.
Check and balance your Ph. and then Plant your plants.
Wait for the water to stabilize and exhaust the chlorine content and then test again. Balance if necessary with the recommended means.
Add the fish to the tank after taking care to quarantine them first, and acclimatize them to the fish tank water temperature.
Keep a close eye on Ph. levels of the water, the water connections, and the working of the pump.
Establish the system is working like clockwork by checking on it once a day for a few minutes.
Enjoy the results in a month or so.