The Planted Tank Forum - View Single Post - Ada Iwagumi Tank And Steps --Photo Heavy--
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Old 10-17-2012, 03:59 PM   #25
Mahawka
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I prefer to have the lily pipes to be fully submerged because this allows the current to create the whirlpool effect. I would give it 2-5 cm below the water line. (from the top of the outflow)

Here is a diagram i drew for you.
Green -Outflow
Red- Inflow
Orange- Current
Blue - Co2 diffuser

As you can see with this set up, the movement of the water pushes the Co2 around the tank for a more effective diffusion.

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