Wang-Sook Stream. Calm water flow After summer monsoon. Korea

_th place in Biotope Aquarium Design Contest 2020

Volume: 1000 L
Dimensions:  160x90x75 cm
List of fishes: Zacco platypus, Rhodeus uyekii MORI, Squalidus japonicus Koreanus,Sarcocheilichthys wakiyae,Microphysogobio yaluensis
List of
plants: Vallisneria natans (Lour.) H.Hara.,Zizania latifolia,Scirpus fluviatilis,Leersia japonica
Description of decorations: Middle driftwood-submerged in water that found in under Wang-Sook stream.
Bottom sand gravel & Rocks – take from Wang-Sook stream.
Description of equipment: sump system. Grovita return pump DC-15000, flow 15000L per hour, floodlight 50W X 3 6000K
Water parameters: Temperature is 27, pH is 6.5
Additional info: 20 percent of water change twice in month, no cooling system, fine filter sponge media in sump change in a week.


Description of the area surrounding the biotope: The Wang-Sook stream flow to Han-River range located in Capital city of Korea, Seoul.
Wang-Sook has various fish species that contain 60 percent of Korean freshwater fish.
In the shade of bushes growing on the banks, among their roots, various kind of fish spawn and find their shelter. Amusingly, some species: Rhodeus uyekii Mori spawn in small freshwater shellfish.
water levels are 2-3 meter in common, in rainy season(a month during summer) it reached to 10meters.
of the underwater landscape of the biotope: The stream passes through sand, so it carries a variety of stones. its substrate consists of fine sand of yellow color, although the rocks are predominantly light brown. As the stream passes through dense variety species of grass, there are many leaves in the water.
Description of the parameters of the habitat: Water is partly clear and transparent. The average temperature is 18℃, but in summer it is 22℃. pH varies 6.5-7.8 depending on the season. TDS is 110.
List of fishes and invertebrates occurring in the nature biotope: Achilognathus rhombeus, microphysogobio yaluensis, Gnathopogon strigatus, Koreocobitis rotundicaudata, rhinogobius brunneus, zacco platypus, Rhodeus suigensis, Rhodes uyekii, tanakia lanceolata, carassius carassius, mandarin fish, coreoperca herzi, Odontobutis platycephala,Squalidus japonicus Koreanus and so on.
List of plants found in the nature biotope: Vallisneria natans (Lour.) H.Hara., Hydrilla verticillata (L.f.) Royle, najas marina, Ceratophyllum demersum L.
Threats to the ecology: Recently, the Wang-Sook stream region has been developed human activity such as cafeteria, work-out place.
So many fish species in the stream disappeared in a year. This human activity that destroyed the stream is going more and more every coming year.
Sources of information: 

Comments of the members of the jury of Biotope Aquarium Design Contest 2020