Drip dosing

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Flaxon-Waxon

Aquarium Advice Addict
Joined
Jun 22, 2012
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Not getting into numbers, and keeping this an engineering question only, if one were to set up a drip dosing system (no pumps) which one would it be better to use, and why (I don't think there are really any serious pros vs cons but wanted to hear from everyone):

1) an upside down bottle with air line and a flow regulator on the end (gravity fed)

Or

2) a right side up bottle with air line and a flow regulator on the end (siphon fed)

Thank you.
 
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