Are there any signs goldfish exhibit if they e in distress from bad water?
< Heavy breathing would be the first sign of stress.> Would you recommend a special filter that should be used in the tank? Currently I use a Whisper Micro Filter with activated carbon and ammonia fighting crystals. I will buy a new filter system once I move because I plan to get at least a 75-150 gallon tank. Thanks again for all your great advice. Sharon Headrick < For large tanks I have a preference to the Marineland Emperor Series. They are very easy to service and I really like the Bio-Wheel feature.-Chuck> Water from a de-humidifier Hi Crew First of all let me thank you all again for the great service you provide, advise like this is hard to find in the UK Now this may sound like a very strange question, but where we live the water from the tap comes out with around 50ppm Nitrate, which obviously makes it fairly un-usable for marine aquariums, I do run the water through an RO unit for top ups and water changes, but I still get a small amount of Nitrate in the resulting water (may