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Discussion in 'Chemistry' started by reefloat, Nov 27, 2013.
regular water changes will prevent high nitrate accumulation!
From my understanding, smaller regular water changes are the least efficient method of exporting nutrients.
If you change 10% then you potentially reduce nitrates by 10% but if you do another 10% change, then you are not reducing Nitrates by another 10% as some of the water is already new so to speak anyway. And you would be changing a percentage of that water as well. Confused you will be.
However, I did hear this on the internet, so it must be true.
but then by your own admission whatever % you are reducing it you ARE reducing it, or have I misinterpreted? also when you say its the least efficient method what is the most efficient?
(I can see me regretting this question)
Lets say week 1 we do 10 % water change, and reduce Nitrates by 10%
Week 2 - 10% water change, x amount reduced, but in that 7 day period Nitrates have built up again
And so on......
So the only real effective way by water changes is large water changes more often than weekly. Which can then be detrimental.
Cheato / NoPox / Skimming etc are more efficient from my understanding. I may of course be wrong though.
Technically speaking I suppose water changes do help to reduce the accumulation of nitrate but is it the solution to the problem, then no!
Water changes are a useful tool for many reasons but won't permanently fix the reasons for excess NO3.
Over time though with weekly smaller water changes would you not reduce the overall amount of nitrates. Yes you will be changing some of the newer water but overall would you not replace more of the older water? Just throwing my 2 pence worth in lol
Larger water changes will have more benefit than smaller.
but remember the question guys - we are not talking about reducing the nitrate but preventing an accumulation :club:
I suppose then weekly water changes Will go some way to prevent accumulation
No, IMO. Water changes won't prevent an accumulation.
It will help to reduce or dilute (whichever way you chose to look at it) the NO3 but if it's accumulating then there are other issues and (to put it bluntly) more cost effective ways of exporting the excess.
Thats ambiguous Gordon what size water changes if they are too small and more nitrates are added than taken away then no
If less nitrates are added so to speak and regular water changes are done (as in more out than in) then I suppose they could do
Bear in mind plenty of people do not do regular water changes and dont have an accumulation nor an increse of nitrates as they use other methods
Water changes never hurt anything if they're done properly i.m.o., but they're a terrible way to reduce nitrates. It will be a real uphill fight as your fish are peeing ammonium all the time and that is inevitably going to end up as nitrate, and if a tank doesn't have much capacity to reduce nitrate. I'd read some of the other nitrate threads for ideas on a more positive and sustainable ways to do this.
Good way to look at it.
Thinking about "preventing the accumulation". Would it be possible to reach an equilibrium whereby whatever no3 was being produced was equal to the amout removed/diluted by the water change.
So over time those parameters would remain relatively stable. And if you were to stop changing water they would then rise.
So does it help prevent the accumulation, I suppose you could say yes it does. It stops it from accumulation any further but dose it actually get to the root of the problem, then no.
thank you all, think the answer then sums up as "yes, ..but"
I asked the question only because I came upon this generalised site that raises the subject and as GED said you hear everything on the internet and difficult to interpret sometimes what is fact or just opinion, obviously as I make water changers any reference to the subject is of interest (you would not believe some of the questions I get asked) here is the reference for anyone interested How to Reduce or Lower Highly Toxic Nitrates in Your Saltwater Aquarium Quickly & Efficiently
Water changes are a method of diluting no3 ..
To other methods are assimilation ie charro,caleurpa etc..
Thirdly then there is denitrification reactors and stuff..
I would say if water change is your Only method of no3 export you have a problem
I went with Maybe due to ambiguous wording. If you'd asked "Will regular water changes help prevent nitrate buildup" then the answer will be yes, but you need more information to say if they will prevent it completely. The answer to your way of wording it will depend on what you consider a buildup to look like, what your rate of nutrient import is, what other methods of export you have and the size of the water changes you're doing with what regularity.
Nothing wrong with accumulation, as long as it's gradual, sooner or later they will get to a level that your system will maintain
The thing better than water changes is good biological filtration, live rock, sand beds, etc
The only way that statement cannot be true, is if the WC water contains NO3. Otherwise it must be true. If a reefer has too many fish and/ or feeds too much then eventhough the statement is true. The benefit may not show.
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