Figure 2: A: Example of two ceramics (i) and (ii) which were sintered at a temperature of 800°C and 900°C, respectively. B: Comparisons of pond water (e) with its various filtrates (a), (b), (c) and (d) from the pots of the soil compositions of 30:30:20 (red), 35:35:30 (red), 35:35:30 (black), 40:20:20 (black) respectively.