Automatic Self Cleaning Sand Bed Filter

Automatic Self Cleaning Sand Bed Filter


A sand bed filter is a kind of depth filter. Broadly, there are two types of filter for separating particulate solids from fluids:
Surface filters, where particulates are captured on a permeable surface
Depth filters, where particulates are captured within a porous body of material.
 

How it Works?
Deep sand beds act as a form of biological filtration, with the idea being that nutrients sink into the substrate, where they are processed by microorganisms, aerobic bacteria and other organisms at the top and anaerobic bacteria lower down. The events in the top layer must happen anyway in an aquarium establishing a community of such microbes is the whole purpose of cycling. However, a thick layer of sand helps in the confines of a tank because it gives the microorganism community more time and space to get the job done. A sand bed may also provide a home for somewhat larger detritivores, such as flatworms.


Deep Sand Bed Creation
You need, obviously, sand, but choose the right sort. Very coarse, almost gravelly sands might be aesthetically pleasing but they don't form a good habitat for most of the micro and macroorganisms in question. A sand consisting of a variety of grain sizes, predominately fine ones, does the job far better. The setting up process is far from complex. hen preparing the tank, just add several inches of sand at the bottom, the deeper the better. Add live sand, which should contain a good starter population of organisms, to get it started and cycle the tank as normal.

Precautions
In comparison to most natural habitats, an aquarium is densely populated, with its denizens producing a great deal of waste relative to the space. A deep sand bed might not be sufficient to keep things in balance. Conduct regular tests and have additional filtration methods ready to install if required. If the sand bed is not deep enough, it might not work very well and, more importantly, toxins produced in the bottom layer could enter the water. Aim for a depth of at least four inches, preferably six or more. It probably goes without saying that burrowing or sifting creatures and deep sand beds don't mix.


Technical parameters:

Flow Rate     (m3/H)	Inlet and outlet (mm)	Filter area (m2)	Diameter (mm)	Height (mm)
YLD-SF-800	15-25	50	0.5	800	960
YLD-SF-1000	23-39	50	0.79	1000	1200
YLD-SF-1200	33-55	80	1.13	1200	1400
YLD-SF-1400	45-75	100	1.54	1400	1600
YLD-SF-1600	60-100	100	2.01	1600	1800
YLD-SF-1800	75-125	150	2.54	1800	1950
YLD-SF-2000	95-155	150	3.14	2000	2150
YLD-SF-2200	115-190	150	3.80	2200	2250
YLD-SF-2400	130-210	150	4.52	2400	2300
YLD-SF-2600	145-225	150	5.3	2600	2400
YLD-SF-2800	155-240	200	6.15	2800	2500
YLD-SF-3000	170-255	200	7.00	3000	2600