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Recent content by d.a.mcfarlane
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Tank size: 20 gallons
Occupants: 30 guppies (most not fully grown, approximately 10 adults), 9 tetras
I have had the tank running for 8 or 9 months and have never had a problem with the fish before. There has been nothing added to the tank for at least three weeks and I have performed a 20%...