1, the noise of the submersible pump itself when found in the tank issued a large buzzing sound (excluding the sound of the oxygen pump), you can first check whether the submersible pump itself is running out of the method is very simple, the submersible pump from the bottom of the tank pick up, do not stick to the bottom of the tank or the tank wall, if you can still hear the larger sound to suspect the submersible pump itself, you can take out the submersible pump, disassembled casing, clean the rotor and impeller, see if it is entangled in debris. See if it is entangled in the debris. Demolition of the water pump is very simple, generally is the inlet on each side of a buckle, while holding down the pull open on the line, open the rotor shaft and the impeller can be removed. After cleaning if there is no improvement you need to replace a better submersible pump, it should be noted that the submersible pump can not do completely silent, plugging in fish does not affect the life can be. Our brand of submersible pumps quiet level is less than 45 decibels, can be used in the family at ease.
2, submersible pumps and water pipe resonance noise submersible pumps are the source of vibration, water pipes directly connected to the submersible pump is very easy to resonate noise, especially many fish friends in order to beautifully use the harder PVC pipe, noise may also occur in the water pipe through the filter box when the water pipe and filter box resonance. Excluding the first pump itself after the problem to check between the submersible pump and water pipe, put your hand on the water pipe connected to the submersible pump, if the water pipe vibration is strong, then it is the water pump and water pipe resonance, usually occurs in the use of PVC and other hard pipes, the solution is the simplest method is from the pump to the filter box the whole replacement hose, of course, this may not be as beautiful as PVC, a compromise is a small section of the pump outlet A compromise is to use a hose in a small section of the pump outlet or a small section of the filter box, so that the resonance is absorbed by the hose, not always from the pump to the filter box. It is also important to minimize the contact between the hose and the tank and filter box, try not to have direct contact.
Another thing about the noise of the oxygen pump and the sound of water flowing from the filter outlet. Oxygen pump noise is also difficult to completely solve, really can not stand the density is not great if you can only open the filter, generally rely on the filter to tear the surface of the dissolved oxygen is also enough. If the sound of water flow, you can bury the outlet under the water surface, basically no sound.
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