Dimensions 100 × 50 × 23 cm
Title Flood is coming! Small igarape near Barcelos, Rio Negro, Brazil
Background light blue cardboard behind
Lighting 2 Led lamps (6500 K) x20 Wt, daytime period - 13 hours (12:00-01:00)
Filtration internal filters SunSun HJ-311B and SunSun HJ-111B, both filled with Pachira and Anthurium leaves and used for creating water flow and faster tannin release
Plants Aquatic: none;
Terrestrial (partly submerged): Pachira aquatica, Ficus americana subsp. guianensis, Anthurium sp., Cattleya violacea
Animals Nannostomus marginatus (~10), Hyphessobrycon socolofi (3), Apistogramma bitaeniata (4)
Materials oak roots; branches, twigs and leaves of Pachira, Ficus, Monstera and Anthurium, imported Amazonian fine white sand
Additional Information This is my oldest biotope ecosystem: I started it in December, 2018. From then it moved 3 times into bigger tanks, and since August, 2020 it's been developing here.
The main principle of this biotope ecosystem is its naturalness. I created it as close to the original biotope, as I could achieve. And here are some of its innovations:
I NEVER BOIL BOTANICALS, because in the natural habitat all the leaves and twigs are never boiled by the nature.
To "cook" proper blackwater I use technical osmosis water (it's a bit "dirtier" than distilled) and pour it into 6l plastic containers, add botanicals and let it saturate with tannins for a week.
In this biotope tannins and other chemicals are released into the water in a natural way slowly like in an igarape near Barcelos. This also lets me avoid fluctuations of water parameters.
As water is acidic with pH<5 there are no algae problems, as algae cannot grow in acidic environment (pH<6). And this is exactly what you have noticed in the original Rio Negro underwater images and videos.
FILTRATION of water is done by roots of terrestrial plants: Pachira, Ficus, Anthurium, Cattleya (the first plant’s roots also prevent sand from sliding from the right corner hill).
RIO NEGRO LOCAL PLANTS FOR DECOR AND GETTING TANNIN. I use 3 species of Barcelos native plants as a source of botanicals and decor, I collect their leaves and twigs right in my flat where I grow them as house plants. This self-grown material gives a true natural look to the biotope, ensures absence of dangerous elements and organisms, and lets me avoid boiling.
https://www.instagram.com (yes, this social network is good for watching fresh photos and videos right from the place, and for personal communication with local people)
and many-many more sources of information...
The quality of this ecosystem is proved by the russian invasion war against Ukraine. Electricity blackouts in winter (we had power outages for 16 hours every day for about 3 months), lack of quality food and technical equipment influenced this aquarium only a little bit: I lost 1 Hyphessobrycon and 1 Apistogramma due to a filter crash.
And as a reward in spring I enjoyed birth of Nannostomus and Apistogramma fry! You can see them in the photos