Hydrometer Aquarium
How Much Salt is Needed for Cigar Sharks?
I have 2 cigar sharks in a 15 gallon tank set at a temp. of 78-82F. When I purchased the sharks the store owner said they require salt which I added per instructions on box. I now own a hydrometer (cos I want to set up another aquarium also). The hydrometer shows no salt in the shark tank, I keep adding it and no reading (although I can get a reading in smaller pot of water - so I guess the meter is working ok). I am worried about adding so much salt to get the required reading. The box of salt states 1 rounded tablespoon per 5 gallons, so 3 should of been enough. I don't want to harm my sharks (or future fish) by doing this incorrectly. Can anyone help/advice?
Cigar Sharks (Leptobarbus hoevenii) are freshwater fish, cyprinids, they do NOT require salt, but DO require a minimum of a 6ft tank, your 15g is far too small.
http://www.aquariacentral.com/species/db.cgi?db=fresh&uid=default&ID=0566&view_records=1
the often sold "shark" that IS saltwater/brackish is the Columbian Shark (Arius seemani) are you sure the store didn't get mixed up with one of these?
http://www.theaquariumwiki.com/Columbian_Shark_Catfish
Nano Lagoon (10): Temp and Salinity
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