Table 1 - uploaded by Jonathan R Matias
Content may be subject to copyright.
The physical profile of Klayton and LECA. A total of 20 samples of each media were measured for diameter and surface area. Measurements of weight, open porosity, water absorption and water absorbance were based on triplicate samples. The data are expressed as mean + standard deviation.

The physical profile of Klayton and LECA. A total of 20 samples of each media were measured for diameter and surface area. Measurements of weight, open porosity, water absorption and water absorbance were based on triplicate samples. The data are expressed as mean + standard deviation.

Source publication
Article
Full-text available
The physical profile of the growing media is a requirement to measure the efficiency of bio filtration of fish waste in the aquaponics system. Klayton and Light Expanded Clay Aggregate (LECA), both ceramic based growing media, were evaluated based on physical profile. Klayton has higher water absorption per surface area as compared to LECA. High su...

Context in source publication

Context 1
... measurements were made at ambient room temperature ranging from 23 o C to 27 o C. A two-tailed independent Student's T-test was used to determine the significance data between Klayton and LECA. Table 1 summarizes the physical characteristics of Klayton and LECA measured in this study. ...

Citations

... It is usually used in agriculture for better drainage and can retain water which provides the roots with high oxygen levels and promotes vigorous growth 32 . Hence, this study aims to determine the species of bacteria present in the bioring and LECA retained water samples respectively. ...
Article
Full-text available
Aquaponics is an integrated production system of aquaculture and hydroponics. Beneficial bacteria convert the ammonia and solid wastes produced by fish in the aquaculture component into essential nutrients for plant growth in hydroponics. The objective of the present study was to identify the bacteria community in the aquaponics system. This study was set by using barb fish and basils as organisms of cultivation. The fish tank (aquaculture) water was pumped into the treatment tank containing bio-ring functions as nitrifying bacteria by converting ammonia to nitrates. The nutrient-rich water from the treatment tank was then pumped into the hydroponics containing lightweight expanded clay aggregate (LECA) and plants. Water samples from the treatment tank and hydroponics were pipetted and transferred onto different agar plates for colony growth. Another set of soil growth plant was used for comparison in bacteria community between aquaponics and conventional land agriculture. RapID system and 16S rRNA gene were used to identify gram-negative and gram-positive bacteria respectively. The identified bacteria species from the hydroponics (LECA) and treatment tank (Bio-ring) were Moellerella wisconsensis, Achromobacter xylosoxidans, Bacillus cereus, Burkholderia pseudomallei and Bacillus sp. respectively whereas the bacteria species isolated from soil were Bacillus sp. and Bacillus pumilus.