40 Gallon Tank Cycle stuck in nitrite stage - dont know what to do anymore....

I have had this previously established 40 gallon stuck at the nitrite stage of cycling for over three months. For a few weeks I thought it was finally fully cycled, ammonia and nitrites were both at 0 and did a small water change to reduce the nitrate levels (80ppm) now a few hours later nitrite is it at 5.0ppm again and my favorite fish is dead.
To make matters worse, it's a fish in cycle, I have a ridicules level of ammonia in my well water (8.0ppm) That I have been using zeolite to combat; putting a bag of the stuff in a 5-gallon bucket to reduce the ammonia to 0.25 in 24 hours, then doing a water change; and practically no GH. Please, I'm at my wits' end here and I'm just about done with this mess

Ph 7.4
Ammona 0
niritr 5.0ppm
nirate 8.0ppm

 

1. How deep is your substrate
2. What kind of filter do you have a hang back or canister filter.
3. Do you have live plants.
4. How many times do you feed your fish a day
5. How many fish do you have right now and what else is in there.

 

1. How deep is your substrate
2. What kind of filter do you have a hang back or canister filter.
3. Do you have live plants.
4. How many times do you feed your fish a day
5. How many fish do you have right now and what else is in there.

About 3 inches
An aqua clear 70
Yes, filled with them
Once a day
12 Corys, snails and one surviving ammono shrimp.

 

If your flow rate is high you can colonize Nitrogen bacteria easily by providing more oxygen.

I would use Seachem Prime as in the instruction it can be used as a high nitrates or nitrites emergency to not only detoxify the nitrogen bacteria but detoxify ammonia. When the nitrogen bacteria as well as the ammonium when detoxify it can be consumed easier by other bacteria that eat them but the plants as well.

I also would recommend Seachem Stability to stabilize new tank syndrome. This has bacteria that not only eat waste but also eat nitrogen bacteria.

Some red lava rocks help colonize denitrifying bacteria and can also give micro nutrients and it might even be beneficial for the shrimps something like a mineral rock instead of the mineral balls. It may because my shrimps look very healthy.

 

I've been using prime and stability, they are what got me thinking my cycle was finished. I didn't know that red lava rocks specifically help the denitrifying bacteria, though guess I`ll have to get some.

 

Have you dosed the 6 x as stated on the instruction for prime on nitrates.

Yea I got mine from home depot huge bag for 4 bucks in the garden section. You might be surprised just how well they work give it a few days mine helped after 24 hours.

 

Do a 50% water change now so your nitrites drop to around 2.5 then do another 50% water change a few hours later to get it to zero. From there monitor it and if it gets above 1ppm then do a water change

 

Yes Ive dosed 6x.

Do a 50% water change now so your nitrites drop to around 2.5 then do another 50% water change a few hours later to get it to zero. From there monitor it and if it gets above 1ppm then do a water change

I'm hesitant to do that. My water has 8.0ppm ammonia out of the tap and it takes at least a day for it to drop, wouldn't it just spike the nitrite all over again?

 

Yes Ive dosed 6x.

I'm hesitant to do that. My water has 8.0ppm ammonia out of the tap and it takes at least a day for it to drop, wouldn't it just spike the nitrite all over again?

8.0 ppm out of the tap? Yikes! I think I would find a different water source.
How many tanks do you have? Might be worth it to purchase RO/DI from a LFS and remineralize it.

 

8.0 ppm out of the tap? Yikes! I think I would find a different water source.
How many tanks do you have? Might be worth it to purchase RO/DI from a LFS and remineralize it.

I have three at the moment and have seriously considered getting a RO system, but the remineralization makes me nervous. If I understand right, one wrong dose and I could seriously mess thing up.

 

I’d suggest talking to your water supplier. I’m not sure where you live but I’m pretty sure that’s over the legal limit, that’s dangerous for even a person to drink. One way or another it has to be fixed or you need an RO system because you’ll need to do water changes eventually

 

Yes Ive dosed 6x.

I'm hesitant to do that. My water has 8.0ppm ammonia out of the tap and it takes at least a day for it to drop, wouldn't it just spike the nitrite all over again?

You might want to look into the walstad method less water changes down the road. If you need some help in setting one or have questions let me know I currently have mine that way.

 

I’d suggest talking to your water supplier. I’m not sure where you live but I’m pretty sure that’s over the legal limit, that’s dangerous for even a person to drink. One way or another it has to be fixed or you need an RO system because you’ll need to do water changes eventually

We don't have a water supplier actually. Our well was not dug to standard levels (I think it was created before those actually) so there is runoff from livestock that seeps into the ground and effects the water.

 

I got my hands on some clean water yesterday and did a water change last night.
Nitrite readings are currently at 0.ppm
Ammonia is at 1.0ppm
Nitrate are 5.0ppm
Not sure why I'm seeing ammonia.

 

My best guess is that your biological filter was processing all that ammonia to nitrites but wasn’t able to keep up processing to nitrates.
And remineralizing isn’t that tricky although I’m still trying to figure out the best way. I use RO/DI and remineralize with Seachem Equilibrium and Seachem alkaline buffer.

 

My best guess is that your biological filter was processing all that ammonia to nitrites but wasn’t able to keep up processing to nitrates.
And remineralizing isn’t that tricky although I’m still trying to figure out the best way. I use RO/DI and remineralize with Seachem Equilibrium and Seachem alkaline buffer.

Im confused as to why though. You would think it has had more then enough time to develop to that stage.Thats a relief to hear about the remineralization though.

 

Zeolite is a tricky media that can hurt more than help during a cycle. I am not an expert and this is only my opinion based on years of trial and error. Using Zeolite in a newly cycled tank could quickly starve out young beneficial bacteria. I keep it on hand for nothing short of tank Armageddon type spike with the hopes of never needing it. How long did you use Zeo and what were the parameters when you added the media?

 

Im confused as to why though. You would think it has had more then enough time to develop to that stage.Thats a relief to hear about the remineralization though.

I agree. Although I have learned that our aquariums don’t always follow the rules lol! Hopefully someone else will chime in with another theory.
Even my RO/DI water doesn’t play correctly. I remineralize to 5/6 dGH and only 2 dKH which brings my ph to about 7.4. That ph seems high for such a low KH but I’ve been able to keep it stable and I can go 2 weeks without the ph dropping much which I only do if I’m away.
I tried using the acid and alkaline buffer together but it causes a lot of precipitation in my bins that I mix the water in. So for now, it seems to be working to just use the two.

 

Wow that ammonia level. I don't think that well water is safe to use (for both humans and fish) with that much runoff.

 

Zeolite is a tricky media that can hurt more than help during a cycle. I am not an expert and this is only my opinion based on years of trial and error. Using Zeolite in a newly cycled tank could quickly starve out young beneficial bacteria. I keep it on hand for nothing short of tank Armageddon type spike with the hopes of never needing it. How long did you use Zeo and what were the parameters when you added the media?

I was using the zeolite to neutralize the ammonia in buckets of water before adding that water to the tank during a water change. It was working until the zeolite was used up and that's what lead to the nitrite spike.

Wow that ammonia level. I don't think that well water is safe to use (for both humans and fish) with that much runoff.

Yeah, we only use it for bathing and watering plants.
Do you guys think I should do another water change tonight?

 

I was using the zeolite to neutralize the ammonia in buckets of water before adding that water to the tank during a water change. It was working until the zeolite was used up and that's what lead to the nitrite spike.

Yeah, we only use it for bathing and watering plants.
Do you guys think I should do another water change tonight?

Hmm I wouldn't do anything with that water.... livestock runoff water can have some nasty stuff.

 

Hmm I wouldn't do anything with that water.... livestock runoff water can have some nasty stuff.

store-bought water until we get a ro system.

 

If your water really has ammonia in it , from the tap I’d def call your town hall/water company. A lot above have offered good advice. To me , it sounds like you’re testing and obsessing over numbers too much. Follow the basic principles/practices of cycling Don’t go crazy with testing , and don’t start adding all kinds of chemicals It shouldn’t be a chemistry project to get it going. Anyways , that’s my 2 cents

 

If your water really has ammonia in it , from the tap I’d def call your town hall/water company. A lot above have offered good advice. To me , it sounds like you’re testing and obsessing over numbers too much. Follow the basic principles/practices of cycling Don’t go crazy with testing , and don’t start adding all kinds of chemicals It shouldn’t be a chemistry project to get it going. Anyways , that’s my 2 cents

I appreciate the advice.

 

I was using the zeolite to neutralize the ammonia in buckets of water before adding that water to the tank during a water change. It was working until the zeolite was used up and that's what lead to the nitrite spike.

Yeah, we only use it for bathing and watering plants.
Do you guys think I should do another water change tonight?

I was using the zeolite to neutralize the ammonia in buckets of water before adding that water to the tank during a water change. It was working until the zeolite was used up and that's what lead to the nitrite spike.

Yeah, we only use it for bathing and watering plants.
Do you guys think I should do another water change tonight?

Well, since this is a fish in cycle, I strongly recommend using Seachem Prime to protect the little guys and Amguard for the ammonia. With water quality such an issue, keeping Algone and Purigen as part of your media routine works wonders without the negative effects of Zeolite. Best of luck. Keep us posted.

 

Well, since this is a fish in cycle, I strongly recommend using Seachem Prime to protect the little guys and Amguard for the ammonia. With water quality such an issue, keeping Algone and Purigen as part of your media routine works wonders without the negative effects of Zeolite. Best of luck. Keep us posted.

I have been using Seachem Prime to detoxify though Iv never looked into Amguard or heard of Algone befoer. In your experience these haven't caused an issue with the cycle?

 

Today's readings are,
Ammonia 2.0ppm
Nirite 0.25ppm
Nitrate 10 to 20 ppm
No outward sign of stress with my fish. The corys are spawning actually.

 

Today's readings are
Ammonia 2.0ppm
Nitrite 0ppm
Nitrate 20ppm

 

Ammonia still at 2.0ppm
Nirit at 0ppm
Nirate 20ppm

 

Add some red lava rocks you can find them on homedepot 4 pound bag for like 4 bucks! The denitrifying bacteria like living in these porous rocks!

 

Add some red lava rocks you can find them on homedepot 4 pound bag for like 4 bucks! The denitrifying bacteria like living in these porous rocks!

My closest home depot is about an hour and a half away so I'll have to wait until Friday for extra cash, but I do plan on it. On second thought, does it have to red lava rock or would feather rock work? Because I have a lot of those.

 

Today I went ahead and put a bag of feather rocks in my filter. Had to remove a bag of crushed coral to make room though. I just mixed that into the substrate to hopefully preserve any bacteria present on it. Anyways reading today are,
Ammonia 2.0ppm
Nitrite 0ppm
Nitrate 40ppm

 

Today I went ahead and put a bag of feather rocks in my filter. Had to remove a bag of crushed coral to make room though. I just mixed that into the substrate to hopefully preserve any bacteria present on it. Anyways reading today are,
Ammonia 2.0ppm
Nitrite 0ppm
Nitrate 40ppm

Well it definitely looks to be processing ammonia. Although interesting that the ammonia is still 2.0 ppm yet nitrates are increasing.

 

Well it definitely looks to be processing ammonia. Although interesting that the ammonia is still 2.0 ppm yet nitrates are increasing.

I know right? I just don't get it.
Today looks about the same. If anything it looks like that ammonia has gone up.
Ammonia 2.0ppm to 4.0ppm
Nirite 0ppm
Nitrate has dropped back to 2.0ppm
Maybe my test kit is bad.

 

You live near a Culligan plant? RO water is 40 cents per gallon in Canada but probably cheaper in the US. Just remineralize it to whatever parameters you want. Yes you need to buy products for that but no more expensive Prime. By the time you factor that in it doesn't cost anything at all

 

You live near a Culligan plant? RO water is 40 cents per gallon in Canada but probably cheaper in the US. Just remineralize it to whatever parameters you want. Yes you need to buy products for that but no more expensive Prime. By the time you factor that in it doesn't cost anything at all

Unfortunately no. The only water plant around here is crystal geyser.

 

For today,
Ammonia looks to be at 1.0ppm. The color seems to change between different lighting.
Nirite 0
Nitrate 80ppm

 

Today is
Ammonia 1.0ppm
Nirite 0
Nirate 20.ppm? Weird.

 

At least the Nitrates are going down!

 

At least the Nitrates are going down!

Its progress. Slow, excruciating progress but still progress.