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Topic Review (Newest First)
01-26-2013 10:13 PM
shift
seeding a new tank

About how many drops would give you 5ppm in a 10g?
01-26-2013 07:54 PM
Diana I have removed as much as 25% of the filter media from the filter of a well cycled tank and had no problems with the ammonia or nitrite levels.

Usually I would take the media from several tanks and combine it to start one new tank.

You have small tanks, and relatively new tanks, and, though cycled, I think they have a way to go before they should donate much media.

You could buy bacteria in a bottle. Look for Nitrospira species of bacteria. Do not waste your money on anything else. Then split the cycled media however you want, and dose old tanks and new with Nitrospira to increase the bacteria. Feed the new tanks just like the fishless cycle until you are ready to add livestock.
Or you could so a fishless cycle, using only a very small amount of bacteria from your existing tanks to jump start the population.

Here is the fishless cycle:
Fishless Cycle
You too can boast that "No fish were harmed in the cycling of your new tank"
Cycling a tank means to grow the beneficial bacteria that will help to decompose the fish waste (especially ammonia). These bacteria need ammonia to grow. There are 3 sources of ammonia that work to do this. One is fish. Unfortunately, the process exposes the fish to ammonia, which burns their gills, and nitrite, which makes their blood unable to carry oxygen. This often kills the fish.

Another source is decomposing protein. You could cycle your tank by adding fish food or a dead fish or shellfish. You do not know how much beneficial bacteria you are growing, though.

The best source of ammonia is... Ammonia. In a bottle.

Using fish is a delicate balance of water changes to keep the toxins low (try not to hurt the fish) but keep feeding the bacteria. It can take 4 to 8 weeks to cycle a tank this way, and can cost the lives of several fish. When you are done you have grown a small bacteria population that still needs to be nurtured to increase its population. You cannot, at the end of a fish-in cycle, fully stock your tank.

The fishless/ammonia cycle takes as little as 3 weeks, and can be even faster, grows a BIG bacteria population, and does not harm fish in any way.

Both methods give you plenty of practice using your test kit.

How to cycle a tank the fishless way:

1) Make sure all equipment is working, fill with water that has all the stuff you will need for the fish you intend to keep. Dechlorinator, minerals for GH or KH adjustments, the proper salt mix, if you are creating a brackish or marine tank. These bacteria require a few minerals, so make sure the GH and KH is at least 3 German degrees of hardness. Aquarium plant fertilizer containing phosphate should be added if the water has no phosphate. They grow best when the pH is in the 7s. Good water movement, fairly warm (mid to upper 70sF), no antibiotics or other toxins.

2) (Optional)Add some source of the bacteria. Used filter media from a cycled tank is best, gravel or some decorations or a few plants... even some water, though this is the poorest source of the beneficial bacteria.
Bacteria in a bottle can be a source of these bacteria, but make sure you are getting Nitrospira spp of bacteria. All other ‘bacteria in a bottle’ products have the wrong bacteria. This step is optional. The proper bacteria will find the tank even if you make no effort to add them. Live plants may bring in these bacteria on their leaves and stems.

3) Add ammonia until the test reads 5 ppm. This is the non-sudsing, no surfactants, no-fragrance-added ammonia that is often found in a hardware store, discount stores, and sometimes in a grocery store. The concentration of ammonia may not be the same in all bottles. Try adding 5 drops per 10 gallons, then allowing the filter to circulate for about an hour, then test. If the reading isn't up to 5 ppm, add a few more drops and test again. (Example, if your test reads only 2 ppm, then add another 5 drops) Some ammonia is such a weak dilution you may need to add several ounces to get a reading.

4) Test for ammonia daily, and add enough to keep the reading at 5 ppm. You probably will not have to add much, if any, in the first few days, unless you added a good amount of bacteria to jump start the cycle.

5) Several days after you start, begin testing for nitrites. When the nitrites show up, reduce the amount of ammonia you add so the test shows 3ppm. (Add only half as much ammonia as you were adding in part 4) Add this reduced amount daily from now until the tank is cycled.
If the nitrites get too high (over 5 ppm), do a water change. The bacteria growth is slowed because of the high nitrites. Reducing the level of ammonia to 3 ppm should prevent the nitrite from getting over 5 ppm.

6) Continue testing, and adding ammonia daily. The nitrates will likely show up about 2 weeks after you started. Keep monitoring, and watch for 0 ppm ammonia, 0 ppm nitrite and rising nitrates.

7) Once the 0 ppm ammonia and nitrites shows up it may bounce around a little bit for a day or two. Be patient. Keep adding the ammonia; keep testing ammonia, nitrite and nitrate.
When it seems done you can challenge the system by adding more than a regular dose of ammonia, and the bacteria should be able to remove the ammonia and nitrite by the next day.
If you will not be adding fish right away continue to add the ammonia to keep the bacteria fed.

8) When you are ready to add the fish, do at least one water change, and it may take a couple of them, to reduce the nitrate to safe levels (as low as possible, certainly below 10 ppm) I have seen nitrate approaching 200 ppm by the end of this fishless cycle in a non-planted tank.

9) You can plant a tank that is being cycled this way at any point during the process. If you plant early, the plants will be well rooted, and better able to handle the disruption of the water change.
Yes, the plants will use some of the ammonia and the nitrates. They are part of the nitrogen handling system, part of the biofilter, they are working for you. Some plants do not like high ammonia, though. If a certain plant dies, remove it, and only replace it after the cycle is done.

10) The fishless cycle can also be used when you are still working out the details of lighting, plants and other things. If you change the filter, make sure you keep the old media for several weeks or a month. Most of the bacteria have been growing in this media (sponges, floss etc).
01-26-2013 09:04 AM
shift
seeding a new tank

SO i have 3 new 10 gallon tanks that I want to seed.

I currently have a 12G and a 5G that have been up for a month and a half ish and are cycled.


I plan on running sponge filters int he 3 10s as they will be used for shrimp for fry tanks. Currently i just added water and air stones (until the sponges arrive). And added a sprinkle of fish food to get a bit of ammonia going.

I put a handful of gravel into one of the 10G tanks.

In the other 2 I was thinking of either using a chunk of the bio rings or a chunk of the sponge from the 12G tank. (which would have less of an effect on the main tank?) Also if i'm using sponge filters can i just pop a few bio-rings randomly around the substrate or should the be in a filter? I could put an empty hob on with just a few rings.. What is the best way to seed a new tank that will be using new sponge (air) filters?

I may also steel a few plants out of the main tank as they will have beneficial bacteria on the surface.

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