Good Pump for indoor fountains or (small) Aquarium

I have installed this pump in my room fountain that serves me as a humidifier in the dark winter months.
In winter the air in homes is often too dry, suffer mucous membranes and houseplants. This is because the mass of water that can store a cubic meter of air, depends on the temperature and can be stored at low temperatures very little humidity. So come cold air in from outside in the winter when airing the room, so the relaive humidity drops as a result of heating up significantly. The one can counteract by allowing either evaporate a vessel with water slowly, many houseplants owns (release moisture, but this is usually lower in the winter) or just running a indoor fountain.

A common mistake when selecting suitable pump is the gross oversizing. The larger the volume flow pumped, the more power required for the pump. However, an indoor fountain runs almost always alongside and therefore must not interfere (either by noise of the pump, even by sounds of water lapping). Most unfortunately too large a pump is bought (why 30 cm head, if I also get for the price of 70 cm?), Which means that then because of the noise level, the flow rate of the water is throttled back.
For small pumps, it is customary to limit the influx, but this can result in the worst case to an operation in cavitation (and thus to damage to the pump). Can no longer pump enough water draw (eg Zustrombegrenzer where have additionally made deposits), it does not run smoothly, is loud and wears out much faster. There is also the danger of overheating.
Therefore, a more elegant way is to regulate the effluent, by the fountain in placing a small bypass before entering the water and partly 'unused' feeds the cycle. This can be done, for example, the drill pipe immediately after the pump a little.

For my indoor fountain therefore this small pump will do just fine, it runs pleasantly quiet. The lifting height of 23 cm, it creates problems at 2/3 the flow rate (with bypass).

Technical specifications
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Flow rate: 150-300 L / h (depending on the pump head)
max. Delivery head: 0.5 m (here approximately 1 L / min, according to characteristic)
Power consumption: 5 W
Mains frequency: 50/60 Hz
Assembly: dipped 2 Gummisaugfüße, thereby also wall-mountable
3 years warranty