Working Mechanism Filter “Under Gravel”

As the name implies filter “under gravel” is a filter which is located below a layer of “gravel” (gravel, sand) at the bottom of the aquarium. Its construction consists of a layer of anti-rust material (plastic) perforated with bearing feet so as to create free space underneath to allow water to flow (Figure 5). In one of its corners (or ...

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Soil Structure Formation

There are two stages that occur in the formation of soil structure, namely (1) clotting (coagulation) of colloidal soil as a result of the influence of Ca2 + ions into the soil micro-aggregates, and (2) cementation (binder) micro aggregate into the aggregate macro. Meurut soil structure formation theory, based on the flocculation occurs on land that is in solution, for ...

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Plankton Parameters In Water Quality

a) The abundance of plankton Parameter abundance of plankton in a body of water can reflect the level of fertility of a body of water. High abundance of plankton that can also show their dominance in the food chain. it can be used as indicators of a body of water. Ways of working : (1) Take the plankton samples that ...

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Vegetation Filters (Veggie Filter)

Vegetation filter is a filter that uses the plant as a filter to remove contaminants that are in aquarium water, especially from the classes of compounds such as nitrogen, ammonia. As is known, the plants require certain nutrients to grow and thrive, such as nitrogen, phosphorus, potassium and others. By manipulating these nutrient needs in such a way, the water ...

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Fish Diseases Caused Worms

1) Class monogenea Monogenea is a kind of worm that attacks the outer body of the fish, in terms of where the attack is divided into two types: a) The worm attacks the gills Dactylogyrus b) Gyrodactylus worm attacks the skin. While symptoms or signs of parasites in fish are: a) The gills of fish broken, wounded and bleeding arise. ...

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Perubahan Pada Parameter Kualitas Air

Pada lingkungan air sebagai media hidup biota air, sering terjadi perubahan-perubahan pada parameter kualitas air seperti derajat keasaman air ( pH – kandungan unsur H+ atau OH- ), kelarutan oksigen (O2), kandungan amoniak NH3, kandungan asam sulfida (H2S), suhu air dan lain-lain. Perubahan lingkungan air ini dapat mempengaruhi kehidupan biota air, terutama bagi biota air yang mempunyai daya toleransi terhadap ...

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