I am Rafa, from central Spain. I started to learn about aquaponics this year and the idea seduced me inmediately. Five years ago I build a green house to grow South African and South American plants. I spend most of my free time growing plants and collecting wild seeds for conservation purposes. I collaborate with several Istitutions in conservation projects and I am member of several botanical societies.
I have also a little garden that I used to grow food plants, tomatoes, onions, etc and also useful and edible plants that we can found in our nature.
My Aquaponics system have a square fish tank 170x170cm made by bricks and armed concret primed in the interior with polyurea. It is burried 60cm from the soil level, 120cm in total. In the green house I build two grow beds in wood panel 250x90x30cm also primed with polyurea. I should have another two grow beds with the same size If I would like to have 1:1 but the green house is not enough big for this, but I planning to build another extention to this green house.
Also I am planning to power the system with solar energy but the costs could be more than 5000€. I am thining in this, not thinking in profitability terms, just in terms of independency from the electrical net. Precisely yesterday it was several cuts due electrical overload (too many air conditioning, I guess).
For the moment I will keep using normal electricity net.
My intention is not only to grow for me, also to teach the the rest of friends in my village what is aquaponics and through my environmental association I will try to give lectures, transmitting the importance of this culture could means and the positive ecological implications it has.
Finally I would like to grateful Mr. Murray Hallam, for opening my eyes.
All the best.