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Okay so this is a slightly more nuanced story than how it read scattered throughout the posts. I thought you'd moved the substrate to the new tank (too bad actually, that would have been a nice easy fix). I also thought you'd written previously that after letting the tap gas off in a bucket the PH stayed below 8?Thank you so much for the detailed response and for reading the long saga!
The new tank had brand new substrate, flourite black sand, but the same corner box filter. Since the filter was used in the old tank, which at one point was brackish, and may have had some shell pieces in it, I think you might be on to something.
I did notice when I let the tap water sit out for a couple days it came close to what was in the tank (around 8.4), and when I retested the tank it was about 8.4 as well, but that was after adding Indian Almond Leaves. Before I knew what was happening I was just adding the water without letting it sit long enough to equilibriate the pH, just long enough for the temp to equalize. The fish store did say my pH and alkalinity was off the chart, even compared to their tanks (our tap water is very basic in general). One of my other tanks has the same flourite black sand substrate and also has a high pH, but I had a separate saga going on with it and switched my water source to pre-filtered it's now at 8.2.
My impression is that the water changes made things worse as well, especially once I moved him to the 5 gal from the 10 gal. Do you think the box filter could be leaching something, since the substrate is new? It has some ceramic media and a few layers of sponges. Maybe the ceramic media latched on to some mineral from the old tank?
I ended up doing a 50% change today with the pre-filtered water source so I've probably gone and made things worse again for him. The betta tank is currently at 8.4. Since the only thing different between this tank and my other is the filter, I think is must be the filter. The tank with lower pH actually is way more planted so I would think it would have the higher pH after the whole day of photosynthesis.
He is definitely pine coned Not the worst I've seen (like if you google it), but I'm afraid it's too late. I will still try the kanaplex as a last ditch effort.
Sorry for the ramble and thanks again for your response.
But, I just checked the pH and it's 8.8! I haven't been testing the pH regularly so idk if it's been fluctuating... Ack! Out of the tap the water is 7.6. Could the frequent water changes actually be stressing him more due to pH fluctuations? I've been letting the water sit out for usually a few hours with a heater in it to bring it to temp... but maybe the pH isn't equalizing??
I was shocked because I added an indian almond leaf a few days ago, which is supposed to lower the pH, right? So maybe it was off the charts before?
One thing that still baffles me, is the pH in his tank is between 8.2 and 8.4 even with an Indian almond leaf in it. I have a bucket of water that's been aging for a couple days that also has an IAL, and it's 7.4. Out of the tap it was about the same. I thought that it would equilibriate to become more basic but it hasn't. Could something in the tank be making it more basic?
I did a ~30% water change last night. The water had sat out for about 48 hours with conditioner and an IAL, temp matched with a heater. The pH is about 8, about 8.4 in the tank.
Don't feel so bad! You couldn't have possibly known this beforehand. Plenty of fish deaths happen without it being anybody's fault, you can lose the genetic lottery or your heater can decide to go on a vacation to the Mediterranean. It happens.Thank you, yeah it has been concerning about the snails... Bettas are such tough little fish that I wouldn't be surprised if they could tolerate something like that for a long time. That also makes me feel terrible that he has gotten so stressed that it came to this. Most of the cases you hear about of fin rot (or at least on advice blogs) are about Bettas kept in small containers with rare water changes... my office mate always comments on how spoiled my betta is so this is just so sad.




The second photo shows worrying degrees of pineconing (so from today), but otherwise he isn't swollen like a balloon. It's kind of borderline where I would say it is hopeless vs. that it might still turn around. I'd wait another day or two, antibiotics take some time. Then see if the scales are coming back down.Thank you.
He seems more active today, but I can't tell if it's because he's less able to maintain his position? Still pine coned, but can't tell if it's worse? Maybe his color looks a bit better too, but the light is brighter now so hard to say.
Here he is last night:
View attachment 641148
Vs. this morning:
View attachment 641149
He often adopts this s-shaped curve and then lists over to one side. Last night he was just floating that way with his head down. Now he is still doing that a bit, but seems like he is trying to maintain a more normal body position.
View attachment 641150
here he is listing to the side
View attachment 641151
I just don't know when to call it and euthanize him. I was mentally preparing to do it today, but now not sure. From what I've read, once there is pine-coning it's usually too late? But then there are reports of fish recovering (rarely) with kanaplex?
I'm doing a little experiment on the water sources. I have 4 cups: 2 unfiltered tap from the questionable pipes, and 2 filtered. Added Prime to all 4, some of the old ceramic media to one of each. Then added some ramshorn snails to all 4. Starting pH of the unfiltered water is 7.6, filtered is 7.8.
Will re-check pH and monitor the snails. After only 10 minutes the snails in the filtered water are cruisin' around, the snails in the tap water are closed up in their shells. The snails in the filtered with no ceramic media are the most active.
| tap | tap + ceramic media | filtered | filtered + ceramic | ||
| Day 1 | 7.6, snails died immediately | 7.6, snails died immediately | 7.8, snails alive | 7.8, snails alive | |
| Day 2 | 8.2 | 8.2 | 8.2, snails alive and active | 8.0, snails less active but alive |
.... kind of sounds like you might push your company to have the water tested (this is at work right?)... because I wouldn't be so sure if that is safe to drink. Sounds kind of ominous.He's still alive today, seems about the same but hard to get a good look to see if his pine coning is worse. His abdomen seems like it might be slightly more swollen. I added the second dose of Kanaplex.
An update on my snail water tests:
Will monitor for another day or so. It seems like the normal state of our water once it equilibrates is around 8.2. The ceramic media didn't dramatically change the pH, but seems like it might be affecting the snails? Possibly leaching something from the water that it was in previously? Still don't know how I had that reading of 8.8... But with all the issues with the water maybe the actual water was different at that time.
tap tap + ceramic media filtered filtered + ceramic Day 1 7.6, snails died immediately 7.6, snails died immediately 7.8, snails alive 7.8, snails alive Day 2 8.2 8.2 8.2, snails alive and active 8.0, snails less active but alive
ALSO, as I was writing this, I got another piece of this puzzle. I had notified the collections manager about my snails (I work in a marine lab), and he looked into where the "tap" water that I use actually comes from. Turns out it was "industrial" water, that can be used throughout the building for equipment cooling. A few months ago (maybe 3), they installed new boilers on the roof... around the time my snails and shrimp crashed... and my betta started having fin issues. So I'm guessing it's copper, or some other metal that only arrived in the water once they installed the boilers. Prime supposedly removed heavy metals, but only "at concentrations typically found", which might be much lower than what I've got.
I'm still so sad about my fish but at least I know what the heck went wrong. The pH swings compounded his already weakened state.



Hmm, I’m mentally battling with myself here over what it could be. Since it is developing so quickly it could also be him fin biting... but than again the tears don’t look like most bites.
he may have possibly bit at it, than the bite may have become infected, leading to rot.
Has he seemed to be stressed recently? Any other abnormal behaviors?
API Freshwater Master Test Kit is probably the best choice for a affordable and fairly accurate water testing kit: https://www.amazon.com/API-FRESHWATER-800-Test-Freshwater-Aquarium/dp/B000255NCI
To my knowledge, don't think so. Any suggestions how I can evaluate if he is stressed or not?does he seem stressed?
i just watched something online, you can kink the suction tubing between cleaning the substrate, to save more water. i don't know how well this works though.My tank has tannis using an IAL. It is quite brownish now. I will try to do 20-30% water changes every 2 days. Could it be possible that poor gravel vaccuming is contributing to it? Whenever I try to gravel vaccum, I can't seem to do it fast enough until it reaches 50%. Some weird debris starts floating around in the tank that I scoop out using a fish net but I don't know, it is quite troublesome to gravel vaccuum effectively. I always hope for the water change to keep things clean.
I don’t normally vacuum my betta’s gravel (maybe once a month, or every 2 months) and they do great, so I don’t think that’s it.
The tannins should really help, so that’s great. If you keep the aquarium light off it will also help to reduce stress.
Since he was healing than it suddenly got worse after a water change I really don’t know what to think. There might be some traces of ammonia in your tap water, but that’s highly unlikely, and even stranger if this is a recent issue.
Keep an eye on him. If he gets much worse I would start treating with salt baths- maybe one a day. Between that and the tannins he will hopefully begin to improve.
I will try that, thanks!i just watched something online, you can kink the suction tubing between cleaning the substrate, to save more water. i don't know how well this works though.
I just did a 50% water change. I really doubt if it is a water quality issue but I will try to get my hands on a test kit. At this point, I don't care if I have to sink in 60 dollars just to help him. On one hand his tail splitting in half in a few hours could mean it isn't fin rot but on the other, the black edges say otherwise. He is sleeping right now and I hope his tail doesn't get worse by the morning.If possible, you could get tetra test strips to tide you over until you can afford the API Master Kit. They're not as precise and perhaps not as accurate, but they're better than no test at all. They don't test ammonia, though, which you definitely should test. However, API sells their ammonia kit separately. It might be cheaper to do it that way.
I just did a 50% water change. I really doubt if it is a water quality issue but I will try to get my hands on a test kit. At this point, I don't care if I have to sink in 60 dollars just to help him. On one hand his tail splitting in half in a few hours could mean it isn't fin rot but on the other, the black edges say otherwise. He is sleeping right now and I hope his tail doesn't get worse by the morning.
This may not pertain to you, but my betta got sick very recently, was barely moving, a few days later his fins went from fine to half destroyed. No symptoms of disease.
It happeed right after I added an extra pre-filter sponge and did a bigg-ish water change. I treated him with API General Cure, seemed to do nothing. The Bettafix (low dose melafix) seemed to make things worse.
My ammonia nitrite nitrate levels were always zero, the water changes and filter were doing their job. But the kH in my tap water is very low (under 30ppm).
At some point the the Kh in my tank was depleted, unbeknown to me the pH in my tank dropped from 7.0 to about 6.0. I was doing 10% water changes every other day for over a week before I finally tested the pH
I don't know if it was the pH drop or some contamination in the water/new sponge. I did 50% water changes for 5 days, then 10% every day. increased the temp to 80F, reduced feeding to 3 mini pellets every other day. pH stopped stabilized after the 4th 50% water change.
The pH is stable again, he's swimming again, tail is in bad shape but growing more each day.
I always knew the kH is low in this towns tapwater, I didnt realize how quickly it can be used up. It happened in my larger display tank from the filter being off for a few hours to add new pipes and pump. Normally I only test ammonia and nitrite, and once a month at most. Didnt occur to me how much pH can change without anything else going wrong.That is very strange. This was happening before the pre filter sponge was added in my case but the tail splitting in half is completely new. I will need to get my hands on a pH tester at least. The IAL might have reduced the pH significantly as well.
I live in Australia, Melbourne and the pH floats around 7 as per their website. I leave my filter on 24/7 so can I be certain that the kH is not the issue?I always knew the kH is low in this towns tapwater, I didnt realize how quickly it can be used up. It happened in my larger display tank from the filter being off for a few hours to add new pipes and pump. Normally I only test ammonia and nitrite, and once a month at most. Didnt occur to me how much pH can change without anything else going wrong.
Melbourne tap water does have a little ammonia but that should be dealt with using Prime. I guess I just have to wait any see. The betta splitting his tail in half within a few hours has me leaning towards tail biting now.When bad things happen after a water change, I always wonder if the tap water is to blame. You might have ammonia in your tap, or it could even be fluctuating pH or other similar parameters. You could try doing smaller, more frequent water changes in hopes of avoiding big swings in the case of pH/KH/GH, and in the hopes of letting ammonia process in small amounts if you have ammonia in your tap.