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Unread 05/31/2001, 10:20 PM   #1
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Agu's Avatar
Join Date: Oct 1999
Location: Sarasota, Florida
Posts: 30,279
C. varians update

Dr Ron,
An update on the c. varians (flatworm eating slugs) that were added to my 180. After acclimating them in the sump and confirming they were healthy (and letting them dine there in the interim) both slugs were added to the main tank. I never saw more than one at a time, leading me to believe that A)they took turns being out and about or B) one perished. Based on their speed it appears a 180 can support one (or is it two) for an indeterminate period of time. It eats flatworms, but not at a pace that puts the population at risk of complete extermination.

They are also escape artists. The one that has been visible went from the main tank, through the overflow, through the 3/16" holes in the screen. down the standpipe, past the skimmer intake, over-under-over the baffles, and back into the insump refugium, all in less than eight hours. It was considering a trip through the return pump when I found it It's living in a water park .

Now that I think about it there may be a reason the skimmer overflowed recently. All powerheads and pump inlets are now covered with sponge prefilters


Less technology , more biology .

Current Tank Info: 30 gallon half cube and 5.5, both reef tanks
Agu is offline  
Unread 06/01/2001, 02:37 PM   #2
Moved On
Join Date: Oct 1999
Posts: 24,538
Hi Agu,

Many thanks for the update. I am glad to get it (and I trust some readers are as well).

Many slugs can fit through very small apertures, it appears that these can practice this act as well.

The prefilters should keep the slugs safe, but will effectively remove in tank plankton. So.... this may be one defined negative trade off (albeit possibly a small one) for using the slugs.

rshimek is offline  

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