[Sarajevo]

How do you test and add nutrients to the water?
I tried aquaponics this year, and all I managed to do was grow long and leggy tomato plants, and kill the goldfish in the pond. Mine are nowhere as full as yours.

Also, what do you use to fertilize the banana plants in your picture upthread?

[Darth Reardon]

The hydroponics is not a closed system, so I don’t have to do any testing. I have about a 30 gallon reservoir that I fill about once a week from my rain water capture. Nutrients I keep pre-mixed in two 5 gallon buckets. I add about 3 cups of each of the nutrients when I fill the reservoir.

I’m playing with aquaponics in an aquarium, but I need more fish. The ammonia levels have never gotten high enough to measure.

The bananas just get like a 10-10-10 once a month. I have no idea what they actually need. Oh, and a good bit of compost.