Top Ten Rules To Fish Keeping

There are a lot of things to learn in fish keeping. It can seem like an uphill struggle but finding out more should be part of the enjoyment of keeping fish. These top ten rules should give any fish keeper a good start and avoid some of the common problems seen time and time again.

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1. Don’t over-feed your fish: The biggest cause of most problems encountered by new fish keepers and even the pro’s is over feeding. An aquarium is a closed environment, so whatever goes in the water becomes part of the environment your fish are living in. Food breaks down into pollutants that are toxic to your fish, releases phosphates which encourage algae, and contributes to general waste matter, which makes the aquarium look unsightly and can encourage disease. Overfeed your fish, and the resulting increase in waste will have a detrimental effect on your water quality, causing fish to become ill, and will encourage algae and general debris, making the tank look unsightly. As a general guide, your fish should eat everything given to them in about a minute, any food sinking to the bottom before it is eaten or left over after a minute and you are overfeeding your fish. Bottom dwelling scavengers or algae eating fish are the exception to this guide, since they will need sinking foods like wafers, and whilst they will take longer to feed, they should still eat everything in a short period. In a new establishing tank, it is best to feed just once a day, but this can be increased after a few months to follow the ‘little and often’ rule of feeding. Introducing a ‘rest’ day once a week when no feeding takes place can also help to keep your fish healthy and encourage them to search for food. For further details take a look at our guide on how much to feed tropical fish.

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2. Regular but small aquarium maintenance: Getting maintenance right is vital for the long-term health of your aquarium yet many fish keepers tend to under or over maintain their aquarium. Basic maintenance includes partial water changes, debris removal, algae wiping, and filter maintenance and should be carried out on a weekly or fortnightly basis. It is much better to do regular low-level maintenance than occasional ‘big clean’ style maintenance, which can disrupt the aquarium causing a loss of useful filter bacteria, affecting water quality, and having a detrimental effect on your fish health. Don’t over kill it, but do it regularly.

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3. Provide the right environment for your fish: If your fish are becoming ill, not feeding, hiding away, loosing colour, or simply not doing well, yet your water quality seems fine and the aquarium is in good health it can be rather difficult to understand out what is going on. One circumstance which is often overlooked yet can make a huge difference to the health of your fish is the visual environment they are kept in, by which we mean the rocks, plants, ornaments and other fish in the aquarium. If you take a small shoaling fish, which in its natural environment lives in heavily vegetated shaded streams and pools, and put it on its own in a tank with bright gravel, a few ‘ornaments’ and rocks, it is going to feel very distressed and is likely to become ill and even die. Take the same fish, along with several others of the same type, and put them in a tank with a natural coloured substrate, plenty of live plants, and a few pieces of bogwood, and they will all thrive, showing strong colours, feeding eagerly, and interacting with each other. Getting the environment right for the type of fish you are keeping, and choosing all your fish to be compatible, will make a huge difference to overall health. The tropical fish site guide to tropical fish section is a great place to find further information about this.

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4. Choose the right equipment for your fish-tank: Filters, lights, and substrate can all have a direct effect on how well your aquarium does the things you want it to do. You can rarely ‘over-filter’ a tank, and an inadequate filter may not cope with all the wastes your aquarium produces, resulting in a slow decline in water quality, both in terms of pollutants and visible waste material. Small internal filters are often the worst and some designs that come with aquariums are truly bad, so it may be worth thinking about upgrading. For aquariums over 60cm, it is well worth investing in an external filter, which will give you much better filtration and the option to use different filter medias later on. When it comes to substrate, you need to think about whether you want, or will want, to keep live plants in the aquarium. If you do, it is worth noting that most larger gravels are far from ideal for plants, and changing the substrate at a later date is a messy and tricky task. Taking a bit of time at the start to look at your equipment options, and perhaps biting the bullet and going for a slightly pricier option, will pay off in the long run. We continually review equipment to use in your aquarium, check out the reviews section for more info.

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5. Clean your filter in tank water: An easy and common mistake made by many fish keepers is cleaning their filter sponges or media under the tap. Chlorine in tap water are harmful to both fish and the bacteria in your filter that perform the task of breaking down waste products. Cleaning filter media under the tap will kill a significant amount of bacteria and without those bacteria, harmful pollutants will build up in the tank, creating health problems. Always clean your filter and filter media in water taken from the aquarium, which can then be discarded.

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6. Research your tropical fish: There are hundreds of fish you can purchase for your tank, and they are all different. Some fish get big, some are aggressive, some fight with similar fish, some nip fins, some hold territories, some are predatory… the list goes on. Choosing incompatible fish can cause all sorts of problems, as well as causing unnecessary suffering to your fish, and is completely unavoidable with a little prior research. Instead of buying fish ‘on spec’, take a bit of time to see what’s available, write them down, then go home and look them up, or at least get the advice of a good retailer before you buy. Of course have look at our Fish Profile pages or even go to contact us as we are always happy to help.

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7. Add new fish to your tank slowly: A new tank needs time to mature, and for the bacteria which process wastes to develop and multiply. If you stock your tank too quickly, or add too many fish at one time, the increase in waste can be too much for the existing population of bacteria to deal with, and water quality soon deteriorates, leaving your fish in unsuitable water and at risk of health problems. Always add a few fish at a time, leaving several days between each purchase. For a full guide to this, take a look at a guide to adding tropical fish to the aquarium.

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8. Test your aquarium water: The majority of aquarium problems have some basis in water conditions, particularly fish health or algae, so it is vital that you know about your water conditions and test on a regular basis. Water testing is relatively easy and does not require a degree in chemistry to understand so there is no excuse for not doing it – in most cases you will recoup the cost of testing by avoiding potentially serious problems. We have reviewed some test kits too so you can choose the one that suits you the best.

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9. Find a good local fish shop: Whilst we try to cover as much of the hobby as possible and give you as much advice as we can, you still need a good source of advice at the point of purchase, and a good retailer could make or break your fish keeping experience. As well as being a good source of fish keeping knowledge, a good retailer will genuinely have your best interests at heart – they will want you to succeed so you carry on fish keeping and keep spending money, perhaps even progressing on to bigger and better tanks. Spend plenty of time trying out different retailers and then stick to the best one for all your livestock. We are constantly visiting new fish stores and doing a tropical fish store review to help you find the store that suits you.

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10. Enjoy your tropical aquarium: Most importantly of all, enjoy your fish and your aquarium, and take plenty of time enjoying it. Fish keeping is all about recreating a miniature natural habitat in our homes and this can take a bit of work. Seeing your fish thriving and going about their business in the world you have created for them is a huge reward for the effort you have put in, so get it right as best you can, and be proud of your achievement.

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