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If I move him to the quarantine, do you think the stress level of being alone and in a new environment could potentially be more risky to his health? I have had some fish die when I move them to quarantine, but usually because they were already in life-threatening condition. Do you think the...

if the others weren't doing so well, I wouldn't notice anything about him, but I just wanted to make sure he is ok before he potentially gets worse

Hi everyone, I purchased 6 Discus about 5 weeks ago in my 75 gallon aquarium. Everything in the tanks is going well; the chemistry is good (pH: 6.5, hardness: 25, Nitrate: 5, carbonate: 20) and all fish are growing fast and healthy. But one discus, pictured below, seems to be a little skinnier...

Thank you for the very informational replies! I do not add any additives or ferts to my planted tank and it things have been going smoothly so thanks for the reinforcement. I will do more water changes to maintain the GH, I have not done one is some time since there are very few fish in the tank.

If ammonia is present, then the tank is not cycled. Do a major water change but be certain the water is the same temp as the tank and that you dechlorinate it. Hope he feels better!

Yes I agree that I should continue testing. Sorry I know I sounded a little trigger-happy to put the discus in the tank and I am not planning on getting them until I am certain water fluctuations will occur. The tank has been set for 6 months, nitrate generally at 0 (although admittedly the bio...

Thanks you!! This was really helpful. Sadly, upon reading this, I believe I have many of my fish have died from chlorine. I think I just jumped so headfirst onto all the aspects of water chemistry that I failed to fully address chlorine/chloramine. Have you ever heard of larger fish being more...

Right now my tap water has the water parameters: Total hardness (GH): 25 Nitrate: 0 Nitrite: 0 Cl: 0.5 Carbonate (KH): 15 pH: 6.4 And my tank: Total hardness (GH): 50 Nitrate: 0 Nitrite: 0 Cl: 0 Carbonate (KH): 20 pH: 6.4 As you can see I have very acidic water that isn't to chlorinated. In my...

I agree, I am sure that conditioning water in a separate container is safer and I will look into that more, but for now I would really like to get my "python" water change system working (the reason I am quoting python is because it is actually just hose and a filter inlet siliconed together)...

Thank you everyone for all of the feedback! I agree that it was probably something with the tap water. I think I am misunderstanding how to best dechlorinate the water as it comes into the tank. Does dechlorinator have somewhat long lasting properties? Should I add the dechlorinator before...

The fish tank right now:

Hi everyone, This actually happened a few months ago, but I need to resolve this issue before I purchase and new fish. My 75-gal planted aquarium was thriving with 3 kuhli loaches, 8 corydoras, 10 rummy-nose tetras, 2 apisstogrammas, and 2 bamboo shrimp. About a week after adding the most...

Looks like some sort of dwarf cichlid to me...

Ok thank you for the helpful feedback! I think you guys are probably right about the tank not being cycled being the problem. The Lemon Tetras were used to an "extremely" planted and established aquarium where I am sure the water quality was good. Putting them into the large tank where nitrite...

I use Tetra AquaSafe Plus by the way. And the chlorine content in my water is very low. Is chlorine actually dangerous to fish? I though it just destroyed beneficial bacteria populations?

Ok, I will do a water change right now. The tank was not fully cycled but I thought I could keep on top of the water changes to keep nitrite and ammonia at zero. I wasn't able to test for ammonia but sounds like it is good news that my pH is low! Is nitrite at 1 mg/L actually lethal?

Here is a picture of the confused lemon tetra and the rest of the school:

Hey everyone, I have had 10 lemon tetras in a 20 gal quarantine tank for about three months while I was setting up their 75 gal. They were completely healthy in there and grew a ton! Then, about 4 days ago I finally moved them into the big tank. The big tank had only been set up for about 2...

Oh! Yeah, the 75 gal is! Sorry, I think I finally understood your question :lol:

They are a really pretty fish, but sadly I have heard they are pretty boisterous. They bother each other a lot in their school so you need a large school. With other tetra it might work but I think they might be to aggressive to the guppy fry. I would suggest small, peaceful tetras like...

Wow, really informative post @Bryon ! Sounds like they can be kept in a community setting, but only with other, fast-moving, hardy fish. The lemon tetras are already a little boisterous so I think I will get a more peaceful tetra like rummy-nose instead. Thanks for the help!

Hey guys, Has any one kept Serpae Tetras? I was wondering if they would be compatible in a 75 gal with: -Lemon tetras -Appisstogramma Agasizzi pair -Bolivian Rams -Discus -Corydoras I am most worried about the apisstos and the tetras getting all the food before the Discus. The only fish I have...

No it is like 28". Like I said it is a temporary tank and both the apisstos and rummy nose would only be in there for a couple weeks.

No worries, I believe it is 2 feet long (it's a 20 gallon) but the tank is just a temporary quarantine tank so I don't want to get any fish that won't be going in my 75 gallon. The fish I am planning on getting are rummy-nose, Sterbai Cory or some other Cory that can go in warm water, kuhli...

Yeah, it is really intriguing to me how we can recreate natural scenarios in the aquarium. @Avel1896, the rummy-nose would be in their only temporarily until they are moved to the 75 gal with the dwarf cichlids. I could do Corydoras instead but I don't know if they would be as effective...

Ok thanks for all the feedback guys! It was really helpful! I will add some dither fish and get a background

Ok, so sounds like dither fish might be a good idea, and flaring won't be harmful to them? They are Apisstogramma Agasizzi. I picked them up from Petco, they were free since someone had given them in. I put them in a quarantine tank and I am not sure if they are actually a pair. Aside from the...

Ok thanks for the input. It is just a pair in a 20 gallon tank (they will eventually be moved to the 75 gallon). How should I distract them/remove the reflections? I will probably get 10 rummy nose on Saturday, will these solve the problem?

Is this okay? I don't know if it will cause stress or if it is just a good outlit for aggression. I don't have any dither fish yet so I didn't know if it would be a good distraction for them or not.

Hi everyone, I have a 75 gal tank I would love to get some Corydoras for. It will be at 82-84 degrees F so I probably get Sterbai Corydoras. However I would really like a big school and I noticed their relatively high price. I have a 20 gal tank that I can pretty much modify in any way and I was...

Also, if no there Corydoras (besides C. Sterbai) that can be kept at this temperature, what does the breeding process look like for C. Sterbai? Is it realistic to breed some in a 20 gallon tank? How long will it take?

Ok. Someone at a pet store suggested panda Corydoras, Adolfi Corydoras, and bronze Corydoras. None of these would be suitable for 80 degree and warmer water?

Hi everyone! I am planning on purchasing a school if 6 to 10 corydoras for my 75 gallon. Right now the temp is about 78 degrees Fahrenheit, but I will gradually raise the temperature to 82-84 degrees in preparation for the Discus I will eventually add to the tank. Now, of course I want Sterbai...