(Power Filters) These are usually external filters attached to the back of the tank. With its own power motor, it sucks water from the tank, passes the water through a sponge (or glass wool and activated carbon), and pumps the filtered water back into the tank.
A filter which hangs on the side of a tank or is submerged in it, containing an internal pump to draw water through. They provide mechanical filtration, and optionally chemical or biological filtration.
Aquarium filters are critical components of both freshwater and marine aquaria.Leibel WS (1993) A fishkeepers guide to South American cichlids. Tetra Press. Belgium pg 12-14. Aquarium filters remove physical and soluble chemical waste products from aquaria, simplifying maintenance.
Do It Yourself; To perform oneself a task usually relegated to an expert
Do it yourself (or DIY) is a term used to describe building, modifying, or repairing of something without the aid of experts or professionals.
Do-it-yourself
(DIYed) Simple past of DIY
Dorman 82602 HELP! Power Steering Filter
Dorman Products, Inc. is well-known as a leader in providing quality auto parts to the aftermarket. We've earned our reputation for excellence from over three decades of experience in providing automotive replacement parts, fasteners and service line products primarily for the automotive aftermarket. Our prestigious position stems from a unique combination of application expertise, innovative product design, and breadth of product offerings, many of which are not conveniently or economically available elsewhere. At Dorman, we take pride in the quality of our products and in your satisfaction.
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Black box
Inside is a homemade opto-coupler. A pair of ir photosensors and ir LED's form a bridge to isolate the micro-controller from the 24VAC thermostat lines.
The signal is not filtered as well as it should be, so the micro-controller had to be programmed for some heavy duty debouncing (single rectified AC creates a flashing light which the controller is fast enough to miss).
fumeExtractor.assembly2
Photo of all the parts including the powersupply. At the bottom is the angled piece of PVC which is cemented to the intake of the DC fan. The output has a plate screwed on to it. Attached to this plate is a filter to remove the noxious gases.