Aqua Rebell Lily Pipes comparison

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Hi All!

I want to buy a 13mm lily pipe for my 60cm * 40cm * 40cm aquarium.
The Aqua Rebell offers two type of lily pipe:

• the OF2
• the OF3

I don’t know yet which one would be more ideal for my aquarium size.
If you have pictures of any of the products in an aquarium, please show them to me.

Thank you very much

PS.: If you prefer another product, please show it to me.