How do I keep a goldfish barrel algae-free?
August 3, 2004 3:28 AM Subscribe
I'm looking after a neighbour's goldfish while she's recuperating after an accident. They're outside, in a half-barrel. The problem is that algi builds up in the water fairly quickly. Are there any tips to help keep the water cleaner, and improve the fishies' quality of life, in between changing it every week or so?