Genuine Bi Orb valve.
Oase Part No. 46043
...Easy to apply & suitable for all high-gloss plastic & glass surfaces.
...A replacement bubble tube that is specifically designed to fit the Bi Orb.
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What's more, it is an automatic setting which simulates a natural light cycle for your fish. An inbuilt timer phases the light through a 24 hour period from daylight to moonlight & back again. Simply choose from the 8, 10 & 12 hour daylight settings & the MCR light will do the rest.
You can leave it running 24/7, so if you are late home or away on holiday your fish's routine is not disturbed.