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About Chris Robbins
Expertise
I have 25+ years of personal experience as a pet store employee and manager in the family pet store business. The main part of our business was Freshwater Fish. I can answer questions on; Fish care, diseases, parasites and fish identification, feeding your fish, breeding and sexing your fish, setting up your aquarium, cleaning your aquarium, and "what`s this weird stuff in my tank/on my fish" questions. I am not an African Cichlid expert, Plant expert or Brackish Expert. No Pond or Saltwater Questions Please.

Experience
I worked in and managed my family's fish and pet and fish store for 26 years and maintained the 35 aquariums. My experience also has included occasional in-home consultation and aquarium maintenance for my clients.
 
   

You are here:  Experts > Animals/Pets > Pet Fish > Fish > Fish tank

Topic: Fish



Expert: Chris Robbins
Date: 4/25/2008
Subject: Fish tank

Question
Hi, my question is, I'm wondering why my fish tank is overflowing with water though I changed the filter cartridge like the filter manual said. The filter is good for a couple days after I replace the cartridge but then it starts to overflow little by little. I have already changed the cartridge now for almost every week. The cartridges say on the packaging that it last at least 2 weeks to 4 weeks. If you have any info PLEASE inform me.

Answer
Hi Daniel;

It sounds like your fish are making more mess than your filter can keep up with. Could your tank be overstocked? Are you overfeeding? Is the filter a large enough capacity for your tank? Do you have messy fish such as goldfish or cichlids? If you aren't sure about any of this let me know what kinds of fish you have, how big your tank is, how big the fish are, how long it takes for your fish to eat all of the food you give them, how often you feed them, brand and model of filter, etc.

It is best not to completely replace your filter cartridges. Rinse them in a container of tank water to 'clear the crud' for as long as you can. The filter cartridges are not just to catch and hold waste. They are a place for beneficial bacteria to grow and consume fish waste to help keep the tank water healthy. Throwing away the cartridge throws away the bacteria colonies too. The manufacturer and retailer, of course, will tell you differently because repeat sales from consumable products like that makes them a great deal of money. Don't fall for it. Rinse them out for a long as you can until they won't allow the free flow of water any longer. I have some filter media that has literally been in use for years. It works out great and my tanks are always crystal clear.

At Your Service;
Chris Robbins

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