req d approx dimensions h xwxd port sizes ship wt each 4 mechanical filtration ... diameter is 81/2 has an easy on/off lid a free-standing base a bypass ... pleated polyester filter cartridge we offer replacement filters in 20µ or a 100µ ... .45 vfl25b vf12 tech talk 65 mechanical filtration and biofiltration suspended solids can ... also be removed by mechanical means such as bag filters ... is the aerobic with oxygen breakdown of dissolved nitrogenous fish waste the ... process is accomplished by two or more strains of autotrophic ... bacteria these bacteria are naturally occurring and will ... as the tank and pipe walls the speed of this process is dependent on ... area flow rate etc the autotrophic bacteria use oxygen in a two-step process to ... or nh4 to nitrite no2 another strain of bacteria converts nitrite no2 to ...
mechanical filtration tech talk tech talk 42 activated carbon ... energy cost careful consideration of particle size can provide significant ... to know when the saturation capacity of the carbon is reached particle size ... and in recirculating systems the number of passes through the bed must be ... optimized for every system design typically for a single pass system a deep bed ... would be required so that removal of dissolved organics can take place in ... the top portion of the bed change the carbon before it ... it could desorb what it has already removed this can cause a nasty toxic release ... use in backwashing a bed expansion of at least 25 percent should be used to ... contaminant from the water use a series of activated carbon filters and do water ... recirculating aquaculture will support bacteria that consume some of the adsorbed ...