Quote:
Originally Posted by shrimphead
looking at the reference of the coin it is still very course sand for a deep sand bed. To try and explain this simply also if you want I will i'll try and dig up some articles on deep sand beds and grain size if your interested. a deep sand bed is about creating an area that is very low oxygen so a type of bacteria can colonise there and process nitrate into nitrongen gas, so the grain size of the sand is very important. it needs to be very fine sand and at least a certain depth before it can create a low enough oxygen area before it can create an area for the right type of bacteria to grow,
looking at your sand bed its just not fine enough sand, nothing to do with your worm
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Sure, your articles are welcome. Even though grain size subject is under a lot of debate, the grain size I have is 0.5 to 1mm, which is acceptable to many aquarists for a deep sand bed setup. I do have a 5" deep sand bed in my refugium, but my display tank sand is not deep 1 to 2". I do not have worms in my refugium, since I filter the gunk before it gets there.