SRC Supporter ReDDeviLs Posted April 10, 2004 SRC Supporter Share Posted April 10, 2004 hi guys, did a 50% water cahnge yesterday and tested my no3 now range from 25-50.. initally was over 100ppm i thought of doing another 50% of water change..my question is how long do i have to wait to do another 50% of water change? can i do it tomorrow? Quote [ ] [ ] Reef Reefing Reefed Link to comment Share on other sites More sharing options...
SRC Member fnscasey Posted April 10, 2004 SRC Member Share Posted April 10, 2004 Do you have any bio-filtration to bring down the NO3 level ? Like using Bio-home ? Quote Link to comment Share on other sites More sharing options...
SRC Supporter ReDDeviLs Posted April 10, 2004 Author SRC Supporter Share Posted April 10, 2004 nope..only DSB Quote [ ] [ ] Reef Reefing Reefed Link to comment Share on other sites More sharing options...
SRC Member ervine Posted April 10, 2004 SRC Member Share Posted April 10, 2004 hm.. i think 50% is a bit risky... but since it's 100ppm I guess it was close to an emergency... Quote Link to comment Share on other sites More sharing options...
SRC Supporter ReDDeviLs Posted April 10, 2004 Author SRC Supporter Share Posted April 10, 2004 i got an advise from henry of ML and he urge me to do the 50% change.. since the no3 droped wonder if i can do another change tomorrow.. Quote [ ] [ ] Reef Reefing Reefed Link to comment Share on other sites More sharing options...
FuEl Posted April 10, 2004 Share Posted April 10, 2004 Suggest you wait another week. Changing another 50% too soon will seriously stress your tank organisms. Nitrates don't build up that fast. You'll have to let your tank inhabitants slowly acclimatize to the new water conditions. Quote Always something more important than fish. http://reefbuilders.com/2012/03/08/sps-pico-reef/ Link to comment Share on other sites More sharing options...
SRC Member tineng Posted April 10, 2004 SRC Member Share Posted April 10, 2004 Do you have any bio-filtration to bring down the NO3 level ? Like using Bio-home ? I have bio-home in my filter....does it really bring down NO3???? Quote Link to comment Share on other sites More sharing options...
FuEl Posted April 10, 2004 Share Posted April 10, 2004 I'm using biohome..either it does'nt work..or you need insane amounts of it to work...which can be financially draining... Quote Always something more important than fish. http://reefbuilders.com/2012/03/08/sps-pico-reef/ Link to comment Share on other sites More sharing options...
SRC Supporter ReDDeviLs Posted April 10, 2004 Author SRC Supporter Share Posted April 10, 2004 than i will wait for another week,thx Quote [ ] [ ] Reef Reefing Reefed Link to comment Share on other sites More sharing options...
SRC Member Tango_Liverock Posted April 10, 2004 SRC Member Share Posted April 10, 2004 simple reasoning: First water change, gives you 50 ppm = 100/2 Second water change, gives you 25ppm = 50/2 Third water change, gives you 12.5ppm = 25/2 Fourth water change, gives you 6.25ppm = 12.5/2 Assumption: No additional NO3 add-in and build-up. What is your targetted NO3 level? Do you have enough salt mix ? Quote Link to comment Share on other sites More sharing options...
SRC Supporter ReDDeviLs Posted April 10, 2004 Author SRC Supporter Share Posted April 10, 2004 hope to bring it down to the minimium.. perhaps to a single digit.. if i can do another water change i will need to go and get salt. Quote [ ] [ ] Reef Reefing Reefed Link to comment Share on other sites More sharing options...
SRC Member Tango_Liverock Posted April 10, 2004 SRC Member Share Posted April 10, 2004 precisely what I am getting at. To achieve a single digit by changing water: 50% require 4 changes (50, 25, 12.5, 6.3) 30% require 7 changes (70, 49, 34.3, 24, 16.8, 11.8, 8.2) 20% require 11 changes (80, 64, 51.2, 41, 32.8, 26.2, 21, 16.8, 13.4, 10.7, 8.6) changing water is a necessary evil. Of course, it has all the benefits. And frequent water change is definitely recommended. But From the calculation above, this will also make the salt sellers very happy. Quote Link to comment Share on other sites More sharing options...
SRC Supporter ReDDeviLs Posted April 10, 2004 Author SRC Supporter Share Posted April 10, 2004 ya lor,always spend 60bucks per 50% change on salt..haiz.. i thought of getting nitrate reducer for long term run,anyway.. i will change it during this few days maybe on a tuesday Quote [ ] [ ] Reef Reefing Reefed Link to comment Share on other sites More sharing options...
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