water filter tubing

Fishtank Water Filter question?

There is a small plastic tube with black plastic in orbit one end attached to the output of my filter. What I do with it? What should be placed outside the tank or inside? What was supposed to be? PS: The mark of my filter is AQUAEL by "small tube plastic "I mean thin plastic tube …

Sounds like the air line …. the end with the plastic star is on the outside of the tank water. Oxygen is fed into the pump and how to get the air bubbles.

EHLE 100 100ml Tiny Tube Waterpipe Bong w/ Ice Pinches and ROOR Active Carbon Filter Adapter

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1/4″ OD John Guest White Tubing 10 ft. Roll filter water ro reverse osmosis $2.75

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1/4″ FRIDGE FILTER WATER PIPE TUBING LLDPE – 20 METRES $18.17

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reverse osmosis 3/8 John Guest Tubing, Water Filter d i $3.25

reverse osmosis 1/4 John Guest Tubing, Water Filter d i $2.75

FRIDGE FREEZER + WATER FILTER PIPE TUBING WATER FITTING $2.61

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