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Scott P.

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Posts posted by Scott P.

  1. On 8/9/2021 at 7:57 PM, Gideyon said:

    One tremendous weakness in Novak's videos is that they're incredibly long and occasionally he'll add a different thing about anoxic filtration.    So I can't find the video in which he suggested this, nor why. It wasn't a requirement.  I took a lot of mental notes but the why to this I can't remember.  I have this vague memory of him saying it decreases oxygenation even more. 

     

    Yeah Dr Novak does have a way of rambling on. His videos could be shorter.

    He does say that this system can take a while to get to its full potential. Just seems to me by cutting off the flow would be counter productive as far as growing bacteria goes.

    I most certainly could be wrong but I can't remember him saying anything about it.

    If you do happen to find it please let me know as I must have missed it.

  2. On 8/9/2021 at 7:03 PM, Gideyon said:

    Thanks for the link.  I'll have to read it more closely when I get a chance. But you're right, that is the simplest way I've seen explaining it.   

    I don't know if this will answer your questions or not....

    The substrate is a baked clay, and will have laterite (iron source) mixed in on the lower inch of it. That combination helps with nitrification from what I understand. Again, I don't get the science of it, but the clay provides some kind of electrical charge that helps with the filtering. 

    The air for the airlift will only be on about 16 hours a day.  And even when it is on, it'll be at a low rate.  The airlift tube is only on the right side.  The water by the right plate will move faster than the left.  I'm thinking the left side will have more of the anaerobic conditions (low oxygen) than the right.   It'll have no movement at night.   

    What is the reasoning for running the airlift for only 16 hours per day? I must have missed that point.

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