Clicky

Jump to content
daveron

No3 rising very quickly

Recommended Posts

daveron

Hi

I have an issue with my old tank, which is around 3 years right now and the issue is NO3.

Currently I am forced to do 25-30% water changes twice a week, and this is just enough to keep the NO3 below 10 (which is still way to high!). I have no idea what is causing the NO3 to raise so quickly as there is just around 50 shrimp and nothing more.

The tank is 30L (8 gal), inert substrate, heavily planted, I add no fertilizers.

Plants are duckweed, anubias, cryptocoryne, and eleocharis parvula carpet.

Two HOB filters - one is sponge, the other one is small sponge + peat + JBL nitratex + seachem matrix (I added two weeks ago, as this thing is supposed to bring down nitrates, but so far no results).

For water changes I use salty shrimp GH +, Azoo Triple Black Water, Azoo Mineral Plus(every second week) and Azoo Ph Down, to adjust the pH of the water that goes into the tank with what's already there.

As for bacteria I add seachem pristine, and seachem stability once a week around 2ml of each.

Feeding is once per 2-3 days, small amounts that gets eaten in a few hours.

So I had that issue already around 5 months back and what I did is bought the JBL bionitratex and added duckweed, and it did solved the problem but to get a good result I had to use two bags of the JBL product for a single tank (the product comes with 4 bags total). Now this thing is quiet expensive imo for the time it lasts, so I would like to ask for any other options to keep the NO3 in check, as the plants are clearly not able to handle that.

From my observations - there is a substantial amount of muck in the substrate, but since the tank is heavily planted I cannot vacuum it.

If needed I can provide some pictures of the tank.

Your help greatly appreciated !

Share this post


Link to post
Share on other sites
jayc

When was the last time you cleaned the filter media?

Share this post


Link to post
Share on other sites
daveron

I did so as soon as the problem came back. Did not help !

Share this post


Link to post
Share on other sites
jayc

Then, the muck in the substrate must be the problem.

Try vacuuming just the top if you can't go deep down due to the plants.

Alternatively, Seachem Purigen  will help. In Aus, we have a cheaper alternative called Macropore. But you might not get that where you are.

Share this post


Link to post
Share on other sites
daveron

The thing is that most of the acidity in the tank comes from humic acids, which purigen will absorb (as Seachem confirmed).

I will try to clean the substrate as much as possible.

Just a small update - I tried vacuuming as you suggested and it looks like it is effective, despite the plant carpet as I managed to suck out a lot debris without disturbing the plants and the substrate. I will continue with frequent water changes, but now vacuuming each time I do that, and hopefully the NO3 will stop rising so quickly after a few weeks.

Thanks for the help !

Edited by daveron
  • Like 1

Share this post


Link to post
Share on other sites
jayc
9 hours ago, daveron said:

looks like it is effective

Good to hear.

 

Share this post


Link to post
Share on other sites
pastu

The bacteria you add weekly are not necessary and ríase nitrates

Share this post


Link to post
Share on other sites
jayc
29 minutes ago, pastu said:

The bacteria you add weekly are not necessary and ríase nitrates

Interesting theory Pastu.

Where have you read/seen this? Because most experiences I have read are that they reduce nitrates, at least temporarily.

Genuinely interested to know if these bacterial additive in a bottle actually raise nitrates instead of reducing it. Please let me know.

Share this post


Link to post
Share on other sites
pastu

Is not a theory. Stop adding them and continúe testing, you will likely see That nitrates stop raising

 

Share this post


Link to post
Share on other sites
Cesar
3 hours ago, pastu said:

Is not a theory. Stop adding them and continúe testing, you will likely see That nitrates stop raising

 

@pastu do you have a link, pdf, research paper? or is this more of your personal experience?

Share this post


Link to post
Share on other sites
pastu

I dont have links and i have  never used bottled bacteria , nor do i think i ever will. But do a search in Google about bottled bacteria and you will find Several reports  of them raising nitrogen compounds.  Either  their dead  bodies rise nitrogen or they have ammonia added to supply them with food. 

Once the beneficial bacteria population is established in a cycled acuarium, adding  bottled ones can do no good in my humble opiniom 

Share this post


Link to post
Share on other sites
jayc

@pastu, thank you. Certainly interesting.

I'll keep an eye out for these reports, but good to know. 

I don't use bottled bacteria either, as I have many established tanks that I can use to seed new tanks. 

Share this post


Link to post
Share on other sites
pastu

I really enjoy cycling a tank from zero. Find fascínating the invisible process seemingly Out of the blue , where ammonia  rises, leaching from the substrate ( always use Ada amazonia or help shrimp substratos) then ammonia turns into nitrite and those two dissapear and you are left with nitrate, al i had to do  was wait, i also use seachem matrix or pondguru,s ultimate and that ends Taking Care of nitrate too.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • revolutionhope
      By revolutionhope
      Hey SKF,
      I've recently started adding 2ppm of nitrates to my weekly/fortnightly waterchanges as my tank constantly had zero nitrates and my plants were looking hungry. The product I use is cal aqua labs green.
      I'd like to know what people's experiences or opinions are on whether small amounts of fertiliser can be added to shrimp tanks WITHOUT dripping it in slowly (as in a typical waterchange which is what I'm currently doing)
      In other words; if I directly dose the 1 or 2 ppm worth of nitrates to my aquarium without slowly dripping it into the tank would it have any negative impact on the health and/or breeding of crystal or tiger shrimps?
      love n peace
      will
    • larrymull
      By larrymull
      Hi Guys,
      My nitrates continue to read above 20, sometimes 40 and I have no idea how to keep them down. All other parameters are fine ph 6.2, 0 ammonia, 0 nitrites, 2kh, 4gh, 195 TDS (it has crept up a bit too much for my liking).
      Anyway some simple things for you to know is that my tank has a layer of frogbit, I do not overfeed (feed every 2nd or 3rd day), weekly 10% water changes using RO water, I also have boss mineral balls, IAL leaf, Benibachi zero, golden vine with xmas moss, 1 aqua clear hob filter and a biospon 56l dual sponge. 
      I do not want to go down the path of using peat moss, I just want to be able to control the nitrates naturally. 
      I would appreciate any thoughts - my plan of attack this weekend is to do at least a 25% water change (this takes forever to do when you are dripping the RO water back in to the tank) and was going to clean the sponge in the HOB filter.


  • Register today, ask questions and share your shrimp and fish tank experiences with us!

    Join Our Community!

  • Posts

    • jayc
      Newer A/C units now have auto on/off features. Maybe it's time for an upgrade @Zoidburg 😁 The things we do for our shrimp!
    • jayc
      @Zoidburg, happy to do that for you. Moved.
    • Zoidburg
      @jayc Would it help at all to move this thread to General Questions/Discussions? Still looking for ideas on what these guys may be.
    • pastu
      I really enjoy cycling a tank from zero. Find fascínating the invisible process seemingly Out of the blue , where ammonia  rises, leaching from the substrate ( always use Ada amazonia or help shrimp substratos) then ammonia turns into nitrite and those two dissapear and you are left with nitrate, al i had to do  was wait, i also use seachem matrix or pondguru,s ultimate and that ends Taking Care of nitrate too.
    • Zoidburg
      I think it might help to understand what water parameters you already have and what substrate.
      As far as the bird mineral blocks go? They should, in theory, be okay, however I'd be concerned about the metal that's in many of them. The metal that's meant to be tied to the bird cages. Wouldn't personally use it, because if extra calcium was required, I'd just add it from a remineralizer or get some form of calcium in another form to add to the tank.
×