Red on guppy tail, possible fin rot

[fishtonic1]

Hello all,

I noticed my guppy has a bit of red on his tail as seen in the photo.
2 weeks ago I noticed early signs of Ich on this specific guppy, so I dosed 3 tablespoons of API Aquarium salt into my 13.5 gallon tank and also raised temperature to 30 C from 26 C. This ich has gone but now this red has appeared.
All my parameters in check too

-Matt

 

[Aiken Drum]

Septicemia. Treatment requires antibiotics, and even with antibiotics mortality rate is high. Your bio says you are from a country where effective antibiotics are vets prescription only, so if you can consult a vet.

 

[Andy Sager]

I agree with Aiken, this is a case of Septicemia. There may also be a connection with the past ICH infestation. ICH is the result of the fish being under a stress. The stresses could be rapid temperature change, harassment by other fish, poor water quality, just to name a few. So when one comes down with ICH, the reason WHY the fish got Ich needs to be found and addressed. A common denominator between ICH and Septicemia is poor water quality. You say " All my parameters in check" but what are your numbers? Ammonia, nitrite, nitrate, pH, General Hardness? Then there is How long have you had this fish? If the fish is new, could it have been where the fish came from was poor quality water? Did you quarantine this fish before introducing him into your main tank? For how long? So while you need to contact an Aquatic Vet for the right treatment, you must also make sure your tank is not the cause.
Hope this helps.

 

[fishtonic1]

I agree with Aiken, this is a case of Septicemia. There may also be a connection with the past ICH infestation. ICH is the result of the fish being under a stress. The stresses could be rapid temperature change, harassment by other fish, poor water quality, just to name a few. So when one comes down with ICH, the reason WHY the fish got Ich needs to be found and addressed. A common denominator between ICH and Septicemia is poor water quality. You say " All my parameters in check" but what are your numbers? Ammonia, nitrite, nitrate, pH, General Hardness? Then there is How long have you had this fish? If the fish is new, could it have been where the fish came from was poor quality water? Did you quarantine this fish before introducing him into your main tank? For how long? So while you need to contact an Aquatic Vet for the right treatment, you must also make sure your tank is not the cause.
Hope this helps.

I have had this fish for months now and hes been fine since. He was quarantined for a few weeks when he was purchased

I change my water every week, and my levels are consistently:

Ammonia: 0 ppm
Nitrite: 0 ppm
Nitrate: 10 ppm
Ph: 7.6
GH: 150
KH: 0

I only have one other guppy, one gourami, and 7 pygmy cory in my 13.5 gallon, lots of plants as well

 

[Andy Sager]

I have had this fish for months now and hes been fine since. He was quarantined for a few weeks when he was purchased

I change my water every week, and my levels are consistently:

Ammonia: 0 ppm
Nitrite: 0 ppm
Nitrate: 10 ppm
Ph: 7.6
GH: 150
KH: 0

I only have one other guppy, one gourami, and 7 pygmy cory in my 13.5 gallon, lots of plants as well

Then you need to diagnose what stress the fish has been under because healthy fish do not get Ich very often. It's only when their immune system is compromised and that comes from a stress.
With a 0 KH, are you sure your pH remains at 7.6? KH is what helps keep the acids of lifeforms from dropping the pH. Nitrate is actually an acid and the more you have, the lower the pH goes. Try testing the water over a week's time at different parts of the day to see just how stable your water parameters actually are.

 

[fishtonic1]

Then you need to diagnose what stress the fish has been under because healthy fish do not get Ich very often. It's only when their immune system is compromised and that comes from a stress.
With a 0 KH, are you sure your pH remains at 7.6? KH is what helps keep the acids of lifeforms from dropping the pH. Nitrate is actually an acid and the more you have, the lower the pH goes. Try testing the water over a week's time at different parts of the day to see just how stable your water parameters actually are.

The red is gone

 

[Andy Sager]

The red is gone

That should mean that whatever stress the fish had has been resolved. You still should try to figure out what the stress was that caused it in the first place. I'd still do the week's worth of pH tests at different times of the day just to be sure it's not drastically changing over a 24 hour period. PH changes over the course of the day but not that drastically. With a 0 KH ( no alkalinity), there's nothing there to prevent major swings in the pH. Hopefully that is all it is and that is easily rectified.