I had a couple of shrimp die the end of last week and when I did some testing I found the nitrates were up at 80ppm. Massive water change sorted this and got it down to 5ppm, everyone happy again.
4 days later and I test again and the nitrates are back up to 80ppm. I’m using TNC Complete, so I looked at the website and it says that f you don’t need nitrates to use TNC Lite but it also says it’s safe for shrimp and fish. I’m adding 0.5ml every day or 2 to a 25 litre tank, so within the recommended dosage. If it can raise the nitrates to those levels in 4 days, how can it be safe for fish, let alone shrimp?
Looks like I need to go the Lite route or have I messed up some where?
Just had another thought. I did also put some root tabs in. I was under the impression that those nutrients stayed in the substrate though.
Nitrates and Fertilisers
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340 litre Aqua Oak
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Fluval FX-4
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4 x Angels (2 x breeding pairs)
6 x Gold Pristella Tetra
7 x Pristella Tetra
1 x Cardinal Tetra
1 x Female Rainbow Stiphodon Goby
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- fr499y
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Could be a mix of the two. Go a few days without the liquid ferts and then test and see what it comes back at.
- Martinspuddle
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What plant species and how many do you have in your aquarium?
WARNING - DO NOT BREED, FEED OR PET THE PUDDLE!
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Will do. Thanks.
340 litre Aqua Oak
Fluval FX-4
Fluval Aquasky 2.0
Fluval Plant 3.0
Aquael Platinum 300W heater
4 x Angels (2 x breeding pairs)
6 x Gold Pristella Tetra
7 x Pristella Tetra
1 x Cardinal Tetra
1 x Female Rainbow Stiphodon Goby
8 x Sterbai Corys
6 x Ottocinclus
3 x Bristlenose
Fluval FX-4
Fluval Aquasky 2.0
Fluval Plant 3.0
Aquael Platinum 300W heater
4 x Angels (2 x breeding pairs)
6 x Gold Pristella Tetra
7 x Pristella Tetra
1 x Cardinal Tetra
1 x Female Rainbow Stiphodon Goby
8 x Sterbai Corys
6 x Ottocinclus
3 x Bristlenose
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Java mossMartinspuddle wrote: ↑Sun Nov 28, 2021 19:39 pm What plant species and how many do you have in your aquarium?
Java fern
Hemianthus Micranthemoides
Lilaeopsis Brasiliensis
Pogostomon Helferi
Hygrophela Polysperma
Lobelia Cardinalis
340 litre Aqua Oak
Fluval FX-4
Fluval Aquasky 2.0
Fluval Plant 3.0
Aquael Platinum 300W heater
4 x Angels (2 x breeding pairs)
6 x Gold Pristella Tetra
7 x Pristella Tetra
1 x Cardinal Tetra
1 x Female Rainbow Stiphodon Goby
8 x Sterbai Corys
6 x Ottocinclus
3 x Bristlenose
Fluval FX-4
Fluval Aquasky 2.0
Fluval Plant 3.0
Aquael Platinum 300W heater
4 x Angels (2 x breeding pairs)
6 x Gold Pristella Tetra
7 x Pristella Tetra
1 x Cardinal Tetra
1 x Female Rainbow Stiphodon Goby
8 x Sterbai Corys
6 x Ottocinclus
3 x Bristlenose
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TNC Complete is high concentration fertilizer and is recommended densely planted aquariums, hence where your high readings are coming from and the plants you have are just not able to use all the fertilizer. I'm amazed you have not had one massive algae outbreak!walker26 wrote: ↑Sun Nov 28, 2021 20:05 pmJava mossMartinspuddle wrote: ↑Sun Nov 28, 2021 19:39 pm What plant species and how many do you have in your aquarium?
Java fern
Hemianthus Micranthemoides
Lilaeopsis Brasiliensis
Pogostomon Helferi
Hygrophela Polysperma
Lobelia Cardinalis
Do what @fr499y suggested, later I'd make up a quarter weeks dose mixed with some RO or deionised water and dose it daily. Start low and slowly increase the dosage as the plants grow filling the aquarium. Also what water are you using for your water changes?
If your using your tapwater which might have high nitrates, test it and adjust your dosing accordingly.
WARNING - DO NOT BREED, FEED OR PET THE PUDDLE!
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TNC Complete suggested dosage is 1ml per 10L of water per week.
So 2.5ml per week would be the suggested dosage for a 25L aquarium (or 0.33ml per day).
That is based on a heavily planted aquarium.
I would suggest dosing maybe only 25% of the suggested dosage (maybe even less) seeing as your only lightly planted at present and maybe gradually increase the dosage as the plants establish.
25% of 2.5ml is only 0.6ml per week or 0.1ml per day, you'll need a small syringe to measure that.
So my advise is to cut back the liquid fertiliser, a lot.
All the best
So 2.5ml per week would be the suggested dosage for a 25L aquarium (or 0.33ml per day).
That is based on a heavily planted aquarium.
I would suggest dosing maybe only 25% of the suggested dosage (maybe even less) seeing as your only lightly planted at present and maybe gradually increase the dosage as the plants establish.
25% of 2.5ml is only 0.6ml per week or 0.1ml per day, you'll need a small syringe to measure that.
So my advise is to cut back the liquid fertiliser, a lot.
All the best
425L SeaBray Elite aquarium - Rio Mamoré (Bolivia) theme
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4 x Cupid Cichlids, 14 x Cory caudimaculatus, 11 x Cory sterbai 51 x Reed Tetra, 4 x Honeycomb Bristlenose (L519)
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- fr499y
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Just a side note, I always recommend TNC Lite no matter how stocked a tank is. I've never used complete, even on my seriously heavy, high tech planted tank ( But I do stock on the heavy side! )
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I mix my own ferts and my tank is pretty heavily planted, I still don't need to add any nitrates as there's enough from fish food alone.
'Lite' fertilisers don't just leave out nitrates hence needing my own mix but they may work for you.
'Lite' fertilisers don't just leave out nitrates hence needing my own mix but they may work for you.
- fr499y
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Sure, adding iron and others seperately certainly wont go a miss