It’s been a busy and fun week.
We transferred 12 of the largest Tilapia from the indoor 55-gallon aquarium to the 300-gallon aquaponic fish tank. I tried to take a picture of them this morning, but they weren’t in the mood. They’re still a little upset about the move, so they spent most of their time hiding in the shadows. It may take another week before they’re back to their friendly selves.
Here are a few photos of the Tilapia as we transferred them to their new home in 2-gallon Ziploc bags. We let these bags of fish float in the 300-gallon tank for about 20 minutes to let the water temperature in the bag equalize with the water in the large tank. Then we slowly added water to the bag from the large tank to avoid traumatizing the fish with a rapid change in pH and other water chemistry.
We also transferred one small Tilapia from the 29-gallon tank to the 55-gallon aquarium. Now there are 12 Tilapia in the large aquarium waiting to grow up and move in with the big fish.
We also bought 50 mosquito fish (Gambusia affinis) from livekoiforsale.com. They’re now swimming around in the 400-gallon grow bed. Their job is to eat mosquito larvae and anything else small enough to fit in their mouth.
After all of the fish were moved to their new homes, Kim added two trellises to the grow bed. Some of the bean and pea plants were getting so long, they needed a way to grow vertically instead of tangling around all of the other plants.
Here is the small trellis…
And here is the larger trellis. They’re made of 1″ x 2″ boards and Trellis Netting on the large trellis and nylon string on the small one.
While all of this was going on, the aquaponic system matured. The plants grew a little more and the bacteria converted the ammonia from the fish to nitrites and nitrates. It could take another month or so before there’s enough bacteria in the water to convert all of the ammonia and nitrites, but, once they’re ready, the nitrates will increase and the plants will grow much faster. Even in our immature system, many of the plants are growing quickly.
Some of the net pots didn’t appear to have anything growing in them, so we pealed off a thin layer of the Sure To Grow medium to reveal small seedlings underneath. Now they can get some sunlight and grow without being trapped under the cotton-like material.