petchong Posted June 6, 2005 Share Posted June 6, 2005 Tank : 4ft x 2.5ft x 2.5ft Sump : 3 ft x 1.5ft x1.5 ft ( 4 compartment) 3 com with coral chips 4in sand bed 25 kg live rock over flow with bi-ball de-nitrator skimmer Fish : 2 2.5in regal tangs , 1 2in purple tang , 1 2.5 in bi-color angel , 1 2 in flame angel , 1 2in lemeon peel angel , 1 2 in coral beauty , 1 2in clark crown , 1 2in cleaner wrasse , 1 2in royal dottyback , 2 cleaner shrimp , 1 boxing shrimp. Coral : around 15 pcs of hard coral ( not very sure of their name) water change is kept at 15percent every 2 weeks. NO3 level is around 25. how can I lower the No3? BTW is it true that UV light should not be used? Quote Link to comment Share on other sites More sharing options...
AhLoon Posted June 6, 2005 Share Posted June 6, 2005 Hi petchong, I don't think UV light has got anything to do with NO3 level. Quote Link to comment Share on other sites More sharing options...
SRC Member LIM CHYE HUAT Posted June 6, 2005 SRC Member Share Posted June 6, 2005 coral chips and the bio balls. Quote Link to comment Share on other sites More sharing options...
SRC Member monsterz1975 Posted June 6, 2005 SRC Member Share Posted June 6, 2005 What brand of denitractor u using? Quote 6x2.5x2.5 (GEO AQUATIC) Aquamedic Turboflotor 5000Baby Aquamedic NR1000 Aquamedic KR1000 Aquamedic Niveaumat Aquamedic Ozone RM Fluidised Reactor Tunze 6060x3 Resun C1000 Aqualight 2x250w + 150w MH Link to comment Share on other sites More sharing options...
SRC Member monsterz1975 Posted June 6, 2005 SRC Member Share Posted June 6, 2005 25kg of LR for a 4x2.5x2.5 tank? Quote 6x2.5x2.5 (GEO AQUATIC) Aquamedic Turboflotor 5000Baby Aquamedic NR1000 Aquamedic KR1000 Aquamedic Niveaumat Aquamedic Ozone RM Fluidised Reactor Tunze 6060x3 Resun C1000 Aqualight 2x250w + 150w MH Link to comment Share on other sites More sharing options...
RAV-65 Posted June 6, 2005 Share Posted June 6, 2005 too little rocks... try using a small pump to blow at your rocks... r there lots of detritus buildup? The bioballs and coral chips got lots of detritus buildup? Quote People do not plan to fail; Often they just fail to plan... Wat I do to prevent myself from tearing my hair out... My stress remedy... Link to comment Share on other sites More sharing options...
SRC Member subxero Posted June 6, 2005 SRC Member Share Posted June 6, 2005 What brand of denitractor u using? Hee Hee.. you going to introduce AquaMedic Denitrator? Quote Link to comment Share on other sites More sharing options...
roidan Posted June 6, 2005 Share Posted June 6, 2005 1) You can try removing the coral chips/bioballs 2) Add more cured live rocks 3) Tune your existing denitrator properly 4) Tune your skimmer properly / Get a better skimmer 5) Lower your number of fishes / Feed them less often 6) Change water once a week instead of twice a week 7) Change a larger percentage of water instead of your 15% each time 8) Ensure the water for your salt mixing does not have significant nitrates. You can use DI/RO to absorb nitrates from your water source. UV light does not significantly increase NO3. U can try a combination of the above to tackle your NO3 problem. Quote Advanced Aquarist (March05) Link to comment Share on other sites More sharing options...
SRC Member scarab Posted June 6, 2005 SRC Member Share Posted June 6, 2005 First and foremost, you must get rid of your bio balls and corals chips. These are major nitrate factories as they are very efficient in the ANN cycle. This is due to the fact that they have large surface area for bacteria to colonise hence they convert Ammonia to Nitrite to Nitrate very fast. Then follow what roidan has posted, you should be ok. Also if possible, increase the flow in your tank to prevent dead spot as they collect detritus which will also eventually contribute to your nitrate. Quote Link to comment Share on other sites More sharing options...
SRC Member stabilo Posted June 7, 2005 SRC Member Share Posted June 7, 2005 Just curious....I read somewhere in SRC that our tap water got some trace of nitrates? Izit true? Think I gona do some test.... Quote Link to comment Share on other sites More sharing options...
Awgui Posted June 7, 2005 Share Posted June 7, 2005 I am wondering if u were to take out entirely the bio balls and coral chips, wouldnt then ammonium be high though nitrate could be low? and isnt it that ammonium is more "toxic" ?? Quote Link to comment Share on other sites More sharing options...
roidan Posted June 7, 2005 Share Posted June 7, 2005 The way to removal is to do it slowly and gradually to allow the system to catch up. *topic moved from LPS forum to General Reefkeeping* Quote Advanced Aquarist (March05) Link to comment Share on other sites More sharing options...
SRC Member scarab Posted June 7, 2005 SRC Member Share Posted June 7, 2005 Yup, can remove is stages so as not to cause ammonia spike. Quote Link to comment Share on other sites More sharing options...
SRC Member Jimng Posted June 7, 2005 SRC Member Share Posted June 7, 2005 I am wondering if u were to take out entirely the bio balls and coral chips, wouldnt then ammonium be high though nitrate could be low? and isnt it that ammonium is more "toxic" ?? That's where proficient Protein Skimming comes into play..... Quote My Tank Thread Part I Link to comment Share on other sites More sharing options...
Awgui Posted June 7, 2005 Share Posted June 7, 2005 In the long run, if I have considerably large ammount of live rocks in the tank itself and a relatively large deep sandbed, there should be enough surfaces for aerobic bacteria to grow and thus do not need the bio balls and coral chips rite? By the way would a macro as300 be considered as sufficient for a 4ft tank? Quote Link to comment Share on other sites More sharing options...
FuEl Posted June 7, 2005 Share Posted June 7, 2005 Hmmm...lower your fish load. That would certainly help. But then again don't be overly worried. 25 ppm of nitrates won't really kill anything. Levels toxic to fishes are way above 100 ppm. Most corals even sps can withstand 25 ppm of nitrates rather well without much side effects. Just try not to let levels climb over this level for more sensitive corals. The only things I could think of that 25 ppm of nitrates would have effect on would be fish larvae and maybe bivalve/crustacean larvae which are far more sensitive than most aquarium livestock. But then again it does'nt hurt to lower your nitrate levels if you are overly cautious like most reefers. Just bear in mind that there has'nt been much literature or proof of nitrate toxicity in such low amounts. In all cases, just make sure your test kit is working. If not your worries might have been for naught. 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 madmac Posted June 7, 2005 SRC Member Share Posted June 7, 2005 Well said, couldn't agree more with you, FuEl. 25 ppm would will brown SPS corals... Hv your media cleaned regularly(monthly), it works well to reduce your ammonium... then I would reduce feeding. Think of it this way. If you reduce your ammonium, your nitrite would be lower, your NO3 would be lower... otherwise, so long as the source is there, changing your media won't help for long. Try for 1 feeding every two days, you fish won't die of starvation. Quote Link to comment Share on other sites More sharing options...
SRC Member Kelmen Posted June 8, 2005 SRC Member Share Posted June 8, 2005 If you have a refugium or spare compartment, culture macroalgae. Or if nothing in your main tank interested in greenery for food, grow some inside there. Grow more light-loving organism (coral) may help too. Quote Link to comment Share on other sites More sharing options...
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