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Protective layer on top of sand against turbidity?

Discussion in 'Non-CO2 Methods' started by PapstBenediktXVI, Jun 26, 2015.

  1. PapstBenediktXVI

    PapstBenediktXVI Subscriber

    Mar 14, 2012
    Likes Received:
    Local Time:
    6:22 PM
    Hey guys!

    I have a bit of an issue with my tank; it's a 60 gallon tank in which i used a layer of worm castings underneath a layer of sand.

    Here's my problem: the wormcastings I used have a really, really small grain size and therefore leak through the sand; since I did not use gravel, any accumulating mulm mixes with the castings and lies ontop of the sand. Now, the castings aren't just a small grain size, they are very light too (or, you know, lots of exposed negative charges), so any critter associated movement keeps them suspended. The result is a really turbid tank (especially after feeding) with dirt covered plants.

    Unfortunately I cannot install an external filter, since I put the tank too close to the wall; a tube won't fit in between ( >.< ) I tried using internal filters but the bioload is waaaay too high; even filter tubes won't work, the castings still form them into a brick after a few days. I bet some of you who use the original walstadt method know what dirt does, instead of passing through filter sponges.

    Anyways after 2 years I finally thought of maybe helping all the dirt form a heavy layer that keeps itself down. So here is my idea on which I am pursuing input from you guys. I figured I could dose way too much Iron for the next few months; since Iron flockulates reall nice (Fe2O3??) the big, complex pieces might be able to catch a lot of fine dust that drags them down. Also they would lay on top and protect the fine stuff from turbulent movement of the water collumn.

    So here's my questions: Is there a more efficient way of doing this than just dosing lots and lots of micro ferts? Do you guys have any other ideas of doing this that I could use instead or combine?

    I don't wanna break my tank down btw; I don't have enough space for keeping fishes in huge buckets for a few weeks.

    Anyways, thanks in advance! Any input is appreciated by you guys :)


    Oh by the way; fun fact: you know how in an aquarium mulm usually aggregates into these larger fluffs on its own? Not in my tank, it's all fine dust. I assume it's the wormcastings that prevent any aggregation? Damn you high CEC!
    #1 PapstBenediktXVI, Jun 26, 2015
    Last edited by a moderator: Jun 27, 2015

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