how often should i vacuum my gravel? - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 6 Old 11-16-2009, 07:18 PM Thread Starter
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how often should i vacuum my gravel?

i do a weekly water change and i was wondering how often to clean the gravel..i feed only what they eat so i dont have much waste food if any... and what is the best method for this...thanks
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post #2 of 6 Old 11-16-2009, 07:36 PM
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Use the gravel vac to change your water. so basically gravel vac as much as possible till you have removed all the water needed to do your water change.

Cheers Zac
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post #3 of 6 Old 11-16-2009, 07:40 PM Thread Starter
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if i have a 90 gallon tank how much water should i change weekly..i use 5 gallon buckets....
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post #4 of 6 Old 11-16-2009, 09:52 PM
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i have a 75 gallon tank and i change about 25 gallons so in a 90 with a 5 gallon bucket i would be changing about 4-6 buckets worth a week. Mine takes a fair amount of time to vac the whole bottom due to it being 5foot long. I make sure that i have vac'd the whole bottom regardless of how much i have taken out and i prefer to take out more then less.

Cheers Zac
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post #5 of 6 Old 11-17-2009, 04:04 PM
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The more water you change, the better for the fish. And make sure it is weekly. I posted at length on this recently, so to save time, here is the post copied over:

Now to the partial water changes. The only reason to do a pwc in a planted aquarium is to rid the tank of toxins that build up and cannot be effectively removed any other way. These toxins are urine and solid waste from the fish. No filter will remove these, period. Plants can, but it is a slow process and only effective if the fish load is very minimal and there are many plants. One author used the example of 6 or 7 neon tetras in a 55g tank that was heavily planted as being the upper limit. Most of us have far more fish in our tanks that this, so we need to do the pwc to remove the pollution. If a well-planted aquarium has a small fish load, fewer pwc's will be needed; Diana Walstad writes of doing one every few months, and that works if the fish load is not beyond the capacity of the plants and biological system. Again, most of us have more fish than the system can support without our assistance via the weekly pwc. In non-planted tanks, the pwc also dilutes/removes nitrates, but this is irrelevant in a healthy planted tank because the plants consume the ammonium, and nitrates are therefore minimal.

It is frequently said that the pwc should be more frequent with less water in order to sustain stability in the water quality. In a planted aquarium the plants are doing the major filtration and the water is, as I've indicated above, going to be stable if everything is working the way it should. So that leaves us with the pollution (toxins). The more water changed, the more pollution is removed, plain and simple.

In the November issue (2009) of TFH there is a good article on this. The author ran tests and explains why changing more water is preferable to changing less water. Pollution accumulates daily (the waste from the fish is steady) and every day an equal amount of waste is added. In other words, the toxins are increasing far more as each day goes by, so each day there is a high percentage of pollution in the aquarium. In contrast, changing 50% once a week is cutting the pollution in half, with the result that day by day the pollution will gradually increase toward the end of the week; in other words, the fish are only going to be subjected to very high levels of pollution at the end of the week just before the 50% water change, so during the previous days they are exposed to slightly less pollution that they are with a daily 10% water change. OF course, changing 50% or more each day would be ideal. But most hobbyists can find it easier to maintain a regular weekly schedule rather than a daily one.

Coming back to the water stability issue: there is no logic in maintaining more stable pollution in a tank. No one could logically dispute that reducing pollution is a benefit and the more the better. At the same time, a significant weekly water change will actually work to maintain more stability long term in the water parameters.

To sum up, a weekly pwc is the minimum in an aquarium, and changing 50% will be healthier for the fish.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #6 of 6 Old 11-17-2009, 05:29 PM
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I do a water change about once a week. I use my Python Gravel Vac to remove the water from the tank and in the process i vac the gravel. It works and keeps everything nice and clean.
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