1.)Do koi and goldfish need a(n) airpump/filter?
2.)Are there any fish that absolutly need filters?
3.)Do mollies need filters, dwarf frogs?
2007-04-26 14:25:23 · 10 answers · asked by Anonymous in Pets ➔ Fish
Fish, including goldfish, mollies and even dwarf frogs only require a filter if you stock them in a tank at over the capacity of the unfiltered tank. Most people are unwilling to get a 75 gallon tank for only 1 molly, so filters are required to get the numbers we want to put in the tank.
MM
2007-04-26 16:29:38 · answer #1 · answered by magicman116 7 · 1⤊ 0⤋
Yes to all of the above.
The reason for filtration is chemical and simple: Fish produce waste through urine, feces and simply exhaling oxygen. This becomes ammonia along with any uneaten food in the tank. Ammonia is toxic and burns the fish: skin, eyes, and worse...gills. With a filter, the water is turned over and there is an area to pull in the floating impurities. Once ammonia spikes, the next bacteria to form is nitrite. It is also toxic. It eats up the ammonia as quick as its produced but at high levels for prolonged periods of time, it robs the fish of being able convert oxygen and they eventually asphyxiate. After a few weeks of nitrite, the nitrate bacteria form. They eat up the nitrite. Any nitrate level of 20 ppm or less is perfect. This bacteria lives in your filter media: sponge, bioballs, etc. as well as on gravel and any other surfaces (decor, etc) in your tank.
Dwarf frogs, although requiring filtration, prefer the small inside the tank ones. They don't like a lot of water agitation and they don't have a huge bioload.
Goldfish actually should have air pumps AND great filtration. Recommended is one tank size up from what you have (a filter for a 30 gallon on a 20 gallon tank, a 55 gallon filter for a 30 or 40 gallon tank, etc) as the bioload is HUGE.
Koi should really be kept in ponds, not in aquariums.
Besides a filter, mollies also require aquarium salt. They do best in brackish water.
2007-04-26 17:26:13 · answer #2 · answered by Barb R 5 · 1⤊ 0⤋
koi yea pretty much need filters...they are usually for ponds or large tanks because they can get huge! and any pond or large tank really needs to have an air pump and filter just for the tanks sake! and goldfish depend on what you keep them in...in a little bowl there is no filter or pump necessary because they can easily be cleaned. pretty much all fish need filters because you really dont want to have a dirty tank and plus filters help keep the ammonia level down and yeah mollies and dwarf frogs need filter and bubbles to live
2007-04-26 17:46:57 · answer #3 · answered by Kendra N 2 · 1⤊ 0⤋
1) not necessarily, as long as you change the water frequently such as instead of once a week with filter, twice to up to three times a week is necessary. goldfish and koi fish are surface breathers by the way
2) saltwater fish and some more sensitive types of freshwater fish. basically if your going to pay for a fish $3 or more you might want to get a cheap good filter i like the tetra whisper filters you can barely hear them. =] which is really nice.
3) im not sure about dwarf frogs but mollies can live without a filter but water changes become more frequent to substain healthy fish, a filter has great benefits such as cut back time on changing water, some filters have biological filteration, it keeps the water cleaner, I mean just spend the extra buck for a good filter. go good first not expensive good but dont go cheap bad.
good luck
2007-04-26 14:37:14 · answer #4 · answered by aNna 3 · 0⤊ 4⤋
Well, to answer your first question. I use to have goldfish. I was always worried sick that they would need an airpump in order to breath. Since I didn't have one, I just used a manual one (one of those plastic ones where you squeeze the end and air goes down..) . Turns out that they don't need airpumps/filters. But you should change their water every 3, 4 days or up to a week.
2007-04-26 14:34:52 · answer #5 · answered by Anonymous · 0⤊ 3⤋
1. Yes, very much so.
2. Yes, all of them held out of their natural homes.
3. Yes, mollies need filters, but I don't think they care one way or another about dwarf frogs.
2007-04-26 14:47:16 · answer #6 · answered by something_fishy 5 · 2⤊ 0⤋
All fish need filters and air pumps ESPECIALLY goldfish and koi as they are heavy eaters and waste producers, the ammonia will build to toxic levels quickly, leaving your tank cloudy and harmful to the fish.
2007-04-26 14:33:19 · answer #7 · answered by digby_by 4 · 4⤊ 1⤋
simply by fact of how fish are they have tails which help them swim. i do no longer think of a fish can fly simply by fact of its tail and gills. and it cant walk simply by fact it does not have ft its tail prevents it from walking or flying its like how birds fly they have wings and how we walk we've ft its purely like that
2016-10-03 23:26:32 · answer #8 · answered by vyky 4 · 0⤊ 0⤋
All fish need filters, if you want them to be healthy...
Otherwise they will be breathing in their own pee...
2007-04-26 14:29:21 · answer #9 · answered by Anonymous · 3⤊ 0⤋
YES 2 ALL 3
AIRPUMP TO ADD OXOGYN AND FILTER(OPTIONAL) TO KEEP WATER CLEENER LONGER .(BUY TETRA , EVRYTHING HAS MONEYBACK GUARENTEE AND ITS DURABLE)
2007-04-26 15:19:46 · answer #10 · answered by Anonymous · 0⤊ 2⤋