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I currently have a 20 gallon tank with 3 neon tetras. I no longer have time to maintain the tank (eg water changes) so I want to move them into something smaller that is easier to manage. What is the minimum tank size they require?

its due to be changed but I didn't want to do it too close to the water change and introduction of new fish. Driftwood is in now and I will pick up some plants today. thanks for your advice!

It uses a medium sized floss filter (aqueon quietflow). lights are on 8am-6pm. Right now I just have gravel and a small ornament. The fish is not hiding behind it though. I guess I should put the driftwood I have back in and add some plants? Thanks for the quick reply!

I have a 20 gallon tank. A few days after my ryukin died two weeks ago (7 yrs old) I cleaned the tank (vacuum, water change, rinsed filter with tank water). A couple of days later I tested the water and all came back fine (0 ammonia, nitrate, nitrite, ph =7.6). Temp is about 80. I headed...

I have a 20 gallon tank that housed my 7+ year old ryukin that recently died. I would like to convert it to a tank of community fish. Is there anything special I have to do to prepare it? I was planning to do a water/filter change. Any suggestions of fish that would be fun for kids to watch? I...

I have 2 Ryukin in a 20 gallon tank that are approx 6 years old. Yesterday I found one of them hiding under the log on its side. Its breathing but doesn't move and doesn't eat. I checked the water and all is ok except the ph is low (no2/no3/amm = 0, ph = 6.0). He so well hidden that I...

i've been removing just the water. glad to know i've been doing it correctly. the stats i posted were before the water change. i checked after and it was back to zero. will keep testing to make sure i do the pwcs frequently enough.

Prior to doing the water change i today i checked the stats and got the following: NO2: 1.0 NO3: 20 PH: 6.0 Ammonia: 6.0 (approx). It was in between the 4.0 and 8.0 colours Is that what i should be seeing given the current conditions? When I do the water changes, should I be vaccumming the...

thanks for all the info! will start doing the water changes you suggest to get the ammonia down.

I have the API master kit. The levels were fine when a tested a couple of weeks prior, so i doubt its suddenly gone bad. I use water conditioner with every water change. I wasn't sure if using more was harmful, but will add more. My tank was set up 3-4 years ago. At that time I added fish...

I have a 20g tank with 2 ryukins. Until recently everything was fine, except that I was a negligent in changing the filter for a few months. As a result, there was brown stuff (mulm?) all over the it (dense floss cartridge) and the holes in stationary filter were clogged with it too. I made...

Sorry about that. I meant to say missing scales. Thanks for the info about the fins. The black-brown colour is disappearing.

I've noticed a couple of things lately and am not sure whether to be concerned or not... Two weeks ago I noticed that my two fish have a patch of gills missing on one side... both in the same area. I suspected it was due them squeezing behind a log that had moved closer to the back glass when...

Thanks jsoong. I'm surprised the flakes have so much protein since they are goldfish flakes and were recommended by the fish store. They seem to be a little happier now that they are getting fed 2-3 times a day. Now I just have to figure out how to get the bigger one to stop eating all the...

I was told that each fish needed 10 gallons, so figured the tank size was right. The plants were plastics ones, so I can't see them being a factor. I change the water weekly (30-40%). Perhaps they simply weren't getting enough food to grow? The only other possibility I can think of is that...

Its a 20 gallon tank with 2 ryukin I bought over a year ago. One is perfectly healthy and growing. They were the same size when I got them. The healthy one has a body length of about 1.5-2", the sick one is only 1". I used to have some plants in the tank but removed them a month ago because...

I've had ongoing constipation/swim bladder problems with one of my Ryukin. After feeding him peas for a bit he gets back to normal, but it always comes back. For the past few weeks I've found him hiding at the bottom of the tank, usually with his head under a piece of the log, and looking...

thanks! i'll give these a try.

thanks crepe. aside from peas, what veggies would you recommend?

one of my fish keeps getting constipated. i gave him a diet of frozen peas for over two weeks and he was doing well. soon after he went back to goldfish crisps the problem came back. i also feed them bloodworms occassionally. i've repeated the frozen pea diet (with a little epsom salt mixed...

thanks for your advice. i noticed yesterday that its poo seems to have returned to normal.

thank you both, i'll try your suggestions. I think i went back to regular food too soon. I mixed some epson salt in with the peas today, however i don't know how much i should be giving. is there any harm in raising the temp or feeding the peas/epson for my other ryukin?

last week i noticed that one of my two ryukin was floating upside down at the top of the tank. At first I thought it had died, but after a while it started swimming again, although with more of a wobble than usual. After doing some research I determined that its likely constipation. I stopped...

thanks. i didn't realize until after i got them that their care requirements were so different. i'll definitely keep a close eye on my parameters. s.

My 20g tank is a few months old. I started with 3 dwarf gouramis, but am now down to two after one died from high ammonia. for over a week another has been hiding, not eating and sitting on the gravel, so i suspect it may have developed ammonia toxicity as well. The water has had zero ammonia...