Help, Fish Jumping

Hey guys, I've been working on a stand for my custom 67 growout tank for a few months now. The tank has been on the floor in the mean time and have had no issues whatsoever with jumping.
The stock is 3 snegal bichirs, 1 tuegelsi, and 1 marbled gar (pike characin).
Yesterday I finished the stand and moved the tank also adding a juevenile black ghost knife.
So far, 3 fish have jumped already, luckily I could save 2 but the tuegelsI jumped last night and I found him this morning and couldn't bring him back. Also, the underside of his gill were pinkish red.
All the fish seem 100% more active than before the move. I'm wondering what the difference could be making them jump? I had to do about a 85-90% water change to move the tank so that may be it? I also added new sand and setup a new canister on it. I still have the marineland 350b on it that has been on it since day one, so the media is well cycled. It is rimless, but I have a polycarbonate roofing lid with on it so I thought it was secure. Please help as I don't want to lose anymore fish. Any and all inputs are greatly appreciated.

Note: I've had the 3 senegals for about 6 months and the tuegelsI for a good 2-3 months. The tuegelsI was the biggest at around 7"

 

Jumping fish is usually a sign of bad water quality. The red hills are a sign of ammonia burns. Do you have a test kit? Can you tell us what your ammonia, nitrite, and nitrate levels are?

 

Jumping fish is usually a sign of bad water quality. The red hills are a sign of ammonia burns. Do you have a test kit? Can you tell us what your ammonia, nitrite, and nitrate levels are?

I don't have a kit right now, but I figured the ghost knife would show signs of stress first since they are scale-less and a little less hardy.

 

I don't have a kit right now, but I figured the ghost knife would show signs of stress first since they are scale-less and a little less hardy.

You need a test kit, that's the only way we can help. An apI master test kit, NOT strips. Until you can figure out your water parameters, I would do a 50% water change. And then I would do a 25% water change every day after until you're able to test your water.

 

You need a test kit, that's the only way we can help. An apI master test kit, NOT strips. Until you can figure out your water parameters, I would do a 50% water change. And then I would do a 25% water change every day after until you're able to test your water.

even after changing 90% yesterday?

 

Seeing as you changed a good portion of the water in such a short amount of time they could be in shock due to the sudden change in parameters. If you had high nitrates in the old water and moved them into very low nitrate water they could be having problems adjusting. While you would think going from high to low nitrates is a good thing, it done suddenly it can be just as bad as a pH swing.

You should really get a test kit as this is almost certainly a water problem. Be it just a change in parameters or high ammonia/nitrite a test kit would tell you what the problem is and how to fix it.

In the mean time, cover that tank, all the holes as well.

 

I agree that your fish are in Shock!

One of the things that happens when you put too many fish in all at once is that your aquarium, which was perfectly cycled for the bio load it had, is quickly "un-cycled" because it has a big spike in ammonia.

Those fish can pollute the tank far faster than the colony of beneficial bacteria can increase to meet the load.

Clearly your fish were suffering from ammonia shock and seeking clear waters.

Of course now that two are dead & the bioload is greatly reduced your pollution will clear up much faster.

 

Where are you getting that from? He only added one fish. The ghost knife. The rest had been in the tank.

 

I'm sorry I didn't read that as carefully as I should have the first time however the OP took everything out of the tank, drained it, moved it & put it all back together. His bacteria all died off.

Now is tank is overstocked for the available bacteria.

But I see he only lost one fish and I thought that he'd actually lost two.

 

How did his bacteria all die off? Clearly ammonia issues? Am I missing something? OP said the original cycled filter is on it. But OP has no test kit and until the water is tested, can't be sure of any issues with the cycle.

I'm more inclined to believe that it's shock from the large water change...

 

Okay you do have a point that we haven't seen any test results yet.

Maybe I'm jumping to conclusions, but I believe he didn't just shock the fish, he shocked the bacteria, and he had a big die-off.

 

Alright everyone, took my water to Petsmart and while the lady was a complete idiot and told me I had to "restart" my whole tank from doing such a large water change, my ammonia, nitrates, and nitrites were all good, but my pH was extremely high. What do you guys think?

 

Alright everyone, took my water to Petsmart and while the lady was a complete idiot and told me I had to "restart" my whole tank from doing such a large water change, my ammonia, nitrates, and nitrites were all good, but my pH was extremely high. What do you guys think?

We need actual numbers.

 

We need actual numbers.

I don't remember the actual numbers of the nitrates and nitrites, but I know the ammonia was 0.

 

Could the BGK's electrical field be causing them to jump?

 

Could the BGK's electrical field be causing them to jump?

I also wondered that, but many people keep them together with no problems. No more jumpers as of yet, so hopefully my large water change helped dilute whatever the problem was.

 

Well the pH change can certainly be shocking to the fish. For a long time I was using just bottled water for my fish tanks and myself.

Then one day I started testing 20 different types of bottled water and found that they all had varying pH. In fact it varied by more than 10x from one brand to another.

Typically I was buying the cheapest stuff and and that always seem to work but now I am more circumspect.