how to remove N03 and P04 effectively

[wsw]

Hi all,

Currently i have a CRS tank, but face algae problem, then test the water and found that N03 is 10ppm and P04 is 5ppm. water change is 10% per week. Still the same, is that any other ways to remove them effectively.

rgds
wsw

[StanChung]

Plants?

Floating plants?-duckweed for example.

[taz_boy]

do a large water change. around 50% will remove them effectively.

[blue33]

You can use Zerolite, put it in the canister. All will be suck out.

[wsw]

tks for the reply guys

Plants?

Floating plants?-duckweed for example.

Hi StanChung,
will try harder to look for them, have visited quite a number of LFS aorund my area either they do not sell or they say it is not for sale....
will try to go to other area when time permit

do a large water change. around 50% will remove them effectively.

Hi taz-boy,
i do not dare to change around 50% because i not scare that my CRS will .......touch wood.

You can use Zerolite, put it in the canister. All will be suck out.

Hi blue33,
does this mean that the N03 and P04 will be suck out or just one of them...

[blue33]

Hi blue33,
does this mean that the N03 and P04 will be suck out or just one of them...

Not sure on NO3, but for ammonia. They act as an anti ammonia agent. They can be "recharged" by dipping into salt bath for about 15mins - 30 mins. NO3 you can just change the water will do.

C328 sells the floating plant when i was there yesterday, lots of them.

[mark0308]

If you need some floating plants, I have some.
FOC if you want, I stay in Sengkang area.
Best regards

[jasonchua1982]

Can I ask what if PO4 is much higher than NO3 ?

Do I dose Nitrogen fertiliser?

Thanks

[dcwk]

Stop feeding. Increase frequency of WC but maintain quantity to be changed each time. Add floating plants advised by brother stan.

[breadshrimp]

Stop feeding for 2 days. Long enough

[blue33]

WC is the fastest way!

[argonmt]

wat type of algae you facing?

May be can try adding plants as suggested by others .. also up your CO2 so tat plants can absorb NO3 and PO4 effectively.. dun on your light for more than 8 hrs.

[DKNY]

wat type of algae you facing?

May be can try adding plants as suggested by others .. also up your CO2 so tat plants can absorb NO3 and PO4 effectively.. dun on your light for more than 8 hrs.

New in planted. Only heard more fast growing plants will absorb the NO3 effectively. How about the algae problem ? By solving NO3 problem will also solve algae probelm ?? Thanks

[carlfsk]

Maybe can use a nitrate reactor and phosphate reactor to remove these.

Do a google to find out more.

[silane]

Hi all,

Currently i have a CRS tank, but face algae problem, then test the water and found that N03 is 10ppm and P04 is 5ppm. water change is 10% per week. Still the same, is that any other ways to remove them effectively.

rgds
wsw

Yeah, Phosphate is nasty, once they acculmulate in high amount, all sort of algae starts to appear.

Will you consider to DIY this:
http://www.aquaticquotient.com/forum...114#post378114
to grow algae off tank to remove Phosphate and Nitrate?

[carlfsk]

Pardon me again ...not sure if I should ask this here.

But if we remove NO3 and PO4 from the tank, aren't we taken away from the plants some of the nutrients they need?

Or do plants need only a minimum amount of NO3 and PO4, that we try to minimise these element in the tank?

Or maybe there're different form of NO3 and PO4 that plants need (like different form of Iron which plants can utlise)? I understand some of us is adding into the tank the Seachem Nitrogen and Phosphous or other brand of fertiliser into the tank. While on the other hand, we are trying to remove these from the tank.

Just for thoughts and I really like to find out more on this...

[bossteck]

What you're trying to achieve is balance.

[carlfsk]

I think many of us know we should achieve a balance, not only in planting but in our life.

But the question is what is 'balanced'? Any specifics numeric indication of a balanced NO3 and PO4 we should work towards to? As in ppm of each?

So there isn't any different form between the Nitrogen (Seachem) we add into the tank and those generated from fish waste and other stuff?

[Shadow]

waste is NH4, fert we dose is NO3, very different. If you happen to read Tom Barr estimate index, NO3 does not cause algae but little bit of NH4 will cause algae boom. That goes for PO4, if I remember corectly it does not cause algae but it will kill the fauna if overdose too much.

[PeterGwee]

You do not need to balance things with some magical numbers for the nutrients. What you need to do is to avoid letting either of the nutrients be it NO3, PO4, K+, Ca/Mg or the micros get bottomed out. Then you are only limited by the limiting nutrient. The rest is basic maintenance like water changes, cleaning filters, pruning and etc which folks might neglect if things goes well. A hardworking farmer will get better return than one lazy one.

Regards,
Peter Gwee