Hello,
I am new to this forum and found it on Diana Walstad's recommendation. I wrote to her with the following question and she suggested that I post here:
I recently tore my moderately planted aquarium down and re-built with a soil substrate and additional plants. The pervious tank version had been running for about 18 months with no major problems-- in that version I had reasoned that by purchasing more tubifex worms than my fish could eat in a day, I could give the worms a chance to make it down into the gravel and cultivate a sustained population in the tank that the fish would be free to graze on throughout the day. I did this and kept it going for around six months by only rarely adding (maybe once every six weeks) a new portion or two of worms. My clown loaches in particular were very happy with this arrangement and depended upon it for the bulk of their diet. I assume that the gravel was being aerated too by both the worms and the loaches digging for the worms. In fact, when I tore the tank down I found at least a dozen worms that had made it to a size of approximately six inches so they must have had the effect of stirring up the gravel as they moved around.
I have a feeling that the worms would do exceptionally well in the new soil substrate, but before I go ahead and add worms to my set-up I would very much appreciate your feedback as to whether raising worms in the tank could be a problem. Many aquarium people seem to consider tubifex disease-ridden and to-be-avoided. I do not know what degree of this is do to the poor breading grounds that they have come from in the past (which I understand has largely been remedied)-- also by raising them in the tank it seems I would avoid most of these problems.
My question is, am I missing something? I love the idea of creating a self-maintaining, self-feeding system but also wonder if there is a good reason why this is not done.
When I initially wrote to Diana she asked if in the previous version the worms allowed me not to vacuum. I'm not really sure. I didn't vacuum very much but I also didn't run the system long enough to know what would have happened a couple years down the line. When I removed the gravel it certainly had a good amount of dark stuff in it but I hadn't seen any chemical consequences.
I really look forward to your responses and to participating in this forum.
Andrea