Sudden ammonia spike in 75 gallon tank.

[skjl47]

Ammonia back to 0.5ppm from 0, nitrite 0, nitrate between 20 to 40 ppm, did a 20 percent water change and hoping that would have reduced the ammonia level a bit and the bb forms soon.

Hello; While 20% is better than no WC at all it is not much better. I guess it is time for me to go with my mantra which is; We each get to run our tanks any way we wish, at least so far.
You need, in my opinion to be doing 50 to 60 % WC every couple of days.

 

[skjl47]

http://www.bioconlabs.com/nitribactfacts.html

Hello; Here is a link that may help.

 

[Tobiassorensen]

Ammonia back to 0.5ppm from 0, nitrite 0, nitrate between 20 to 40 ppm, did a 20 percent water change and hoping that would have reduced the ammonia level a bit and the bb forms soon.

How is that even possible? Did you have readings saying 0 ammonia and right away you fed heavy? You need to do at least 30% waterchange everyday and feed maybe every other to every third day at tops right now or you will have bad parameters quick. Are you even listening to the advices you get here? You need to upgrade your filtration to fix this. Build a DIY tricklefilter and fill it with biomedia right away is my advice.

 

[skjl47]

How is that even possible? Did you have readings saying 0 ammonia and right away you fed heavy? You need to do at least 30% waterchange everyday and feed maybe every other to every third day at tops right now or you will have bad parameters quick. Are you even listening to the advices you get here? You need to upgrade your filtration to fix this. Build a DIY tricklefilter and fill it with biomedia right away is my advice.

Hello; My take is he/she is running what I call a "tightrope tank". By that I mean a tank essentially too small for the amount of fish. In this case a large single fish. The tank will be on the edge of a mini cycle from even fairly normal things. A bit of overfeeding on any day can result in an ammonia spike.
There is also some reluctance to do large WC which adds to the issue. The ammonia will show up on the available tests but there are likely to be other things in the water such as decay by product we cannot as yet test for. I have been involved in other similar threads and often we never learn the final outcome.
I get that my or other members advice does not have to be accepted or followed. Open forum and we all have an opinion. So be it.

 

[Galantspeedz]

is the test done with test strips or liquid test?

 

[rajpradeep32@gmail.com]

is the test done with test strips or liquid test?

Liquid test.

 

[rajpradeep32@gmail.com]

Hello; My take is he/she is running what I call a "tightrope tank". By that I mean a tank essentially too small for the amount of fish. In this case a large single fish. The tank will be on the edge of a mini cycle from even fairly normal things. A bit of overfeeding on any day can result in an ammonia spike.
There is also some reluctance to do large WC which adds to the issue. The ammonia will show up on the available tests but there are likely to be other things in the water such as decay by product we cannot as yet test for. I have been involved in other similar threads and often we never learn the final outcome.
I get that my or other members advice does not have to be accepted or followed. Open forum and we all have an opinion. So be it.

Ok, will do 50% wc every couple of days and will will feed the fish once in 3 days.

 

[rajpradeep32@gmail.com]

How is that even possible? Did you have readings saying 0 ammonia and right away you fed heavy? You need to do at least 30% waterchange everyday and feed maybe every other to every third day at tops right now or you will have bad parameters quick. Are you even listening to the advices you get here? You need to upgrade your filtration to fix this. Build a DIY tricklefilter and fill it with biomedia right away is my advice.

Yes I am following the ideas which you guys are suggesting, I fed the fish only few dried shrimps almost after 4 hours after a wc, and the reading of ammonia was 0 at that time during feeding and almost after 8 hours post that ammonia was back to 0.5ppm.
Will try to upgrade my filter, cuz I had the cycle running perfectly using these 2 eheim filters except for I didnt clean the filters for a long time which started the issue and cleaned both at one instance.
Will do water changes as mentioned, reduce feeding and will see how it works.

 

[Galantspeedz]

try adding more filter media also

 

[Tobiassorensen]

Hello; My take is he/she is running what I call a "tightrope tank". By that I mean a tank essentially too small for the amount of fish. In this case a large single fish. The tank will be on the edge of a mini cycle from even fairly normal things. A bit of overfeeding on any day can result in an ammonia spike.
There is also some reluctance to do large WC which adds to the issue. The ammonia will show up on the available tests but there are likely to be other things in the water such as decay by product we cannot as yet test for. I have been involved in other similar threads and often we never learn the final outcome.
I get that my or other members advice does not have to be accepted or followed. Open forum and we all have an opinion. So be it.

+1

Yes I am following the ideas which you guys are suggesting, I fed the fish only few dried shrimps almost after 4 hours after a wc, and the reading of ammonia was 0 at that time during feeding and almost after 8 hours post that ammonia was back to 0.5ppm.
Will try to upgrade my filter, cuz I had the cycle running perfectly using these 2 eheim filters except for I didnt clean the filters for a long time which started the issue and cleaned both at one instance.
Will do water changes as mentioned, reduce feeding and will see how it works.

Dont feed after a waterchange with this tank. Feed before changing the water always. And make a schedule with waterchange at least 30% every day until 0 ammonia 0 nitrite and 5 nitrate at tops. Then you can start skip one day so change every other day instead at least 30% keep nitrate at 10ppm at tops and feed onlu one shrimp at a time so you can control if the arowana eats everything you throw in the tank. And for the arowanas best get a bigger tank as soon as possible. You should have got it yesterday. They get large as hell. I have seen 100+cm arowanas in aquariums.

try adding more filter media also

Yeah i tricklefilter with biomedia is the best thing possible right now for his tank. It doesnt have to be a fancy filter or expencive at all. The latest tricklefilter i built cost me about 30 usd to build. But then i had 70 or 80L of biomedia laying around so i didnt have to pay for that.