Help with Nitrites

Well, I posted a similar link a few days ago in water chemistry, and didnt get much info, and now my Nitrites are getting worse. I have tried searching, but there isnt much info on high NO2, just on the NO3.
Here are my params:
Temp:79
SG: 1.025
PH: 8.3
Ammonia: 0ppm
NITRITES: 5PPM
Nitrates: 10ppm

I cant figure out why my NO2 spiked so high. Someone suggested that it was due to me sifting the sand (which I did do during some aquascaping), and that it would drop again soon. It has been 72 hours, and still has not dropped.
The only thing I have changed is the brand of salt, which was instant ocean, switched to coralife. But I dont see how that would change anything, specially since they are both good brands. I have done a head count and nothing is missing.I also had a fairly large anemone die on me about 2 months ago. The tank seemed to resettle, but could this still be risidual from that?
Any help would be greatly appreciated. I'm starting to get very worried about this.

 

How long has the tank been set up and running for 50 to 75 days ?

 

No, about 5 months now

 

Reason I ask is I find them to reappear again on average about 8 weeks in the total cycle and people often thin its done cycling.. Thats why i use a single fish and not a hunk of rotting meat , Or Live rock .. If you did use a lot of L/Rock there could still be some internal die off causing the problem, Also maybe the cycle is never been completed ad its still in a semi cycling condition ? At 5 months is about what I consider it safer I go for 12 to 14 weeks with one fish then after that I add one more then so on every 3 weeks allowing for the bacteria to increase enough to handle the added load. You may be just one who got a little lucky with in a fast cycle and now the tank needs time to catch to the bio load . Stop feeding for a few days completely then go back to feeding 1/4 of what you where feeding that will help as will a good air pump and stone ..

Then again you could have some organic matter in the system that is decomposing and causing the spike above rock die off ? You'll have to look for that. old shells or driftwood old sea stars even I have seen them all used as decorations and they have caused the problem . Just a idea I ask about .Its happened before

 

OK, bits and pieces are fitting together. We recently threw some shells into the tank, for some hermits we got. Also, I added some base rock for aquascaping. I followed amcarrigs rinse procedure, but do you think that could also be adding to it as well?

 

I have also heard that if you do too many water changes in a short period of time your nitrites can increase and sometimes it can cause your tank to "re-cycle"

 

Did you not just a while back come home and have a huge die off ? And also you use plain tap water if I'm not mistaken seems I read that on a previous post from you several weeks back..about a R/O wasting to much water and in the desert , You could be adding NO2 and Ammonia these are found in about all tap water just as nitrates are also...
And if you did a huge water change as i think many here all jumped right to the do a water change and if you did then all you did was throw it all out of balance and if you used tap water ? maybe even the Chlordanes killed off your bacteria and generated a whole new set of problems and more cycling.

You best get a good water filter or you will keep adding the stuff and as it acclimates as minerals and metals never evaporate off and just build up in the system then you will see a die off far more often then you'd want to. If its the waste water ? Get a Kold Sterile unit no waste at all and better then R/O D.I water.

 

It wasn't really a huge die-off, but we had that anemone that died. It took a tang with it, but we managed to save everything else.
We did not do a huge water change. I do 10 percent changes bi-weekly though.
I have tested the tap. With my API test kit, it reads 0 ammonia, 0 nitrites and 0 nitrates. I treat it with Prime before adding.
It was my post about RO/DI. Its not even available at stores, and the units that they sell for making your own all seem to have a "95% rejection rate". With the cost and laws with water usage here, it would probably cost as much as the unit itself just to make, say, 20 gallons. Plus if your using that much water you can be fined or even go to jail over it here (and yes, they do enforce the law ). The Kold Ster-ile seems cool, and would honestly even be a lot more economic in my situation. Do you have any experience with it Tangster? I would just need to know if I could hook it up to a sink or bathroom fixture. I live in a apartment, so I dont have provisions to garden hoses or anything like that. :-/

 

These are about the only unit that you should connect to a sink faucet, People should never add all the back pressure to the seals and O rings in sink faucets to connect a R/O unit to, The faucet body is not designed to hold all that pressure.. In an apt. its O.K its not your money but if in a Home it can get expensive , Also if in apt or rental home always remove the faucet adapter before the Landlord sends in a plumber . Its in most leases small print.. But this filter has absolutely know waste water and will deliver up wards of 3 GPM . This allows for faster tank and bucket fill ups no more dribble..3 GPM is more Gal then a average sink faucet will deliver at 50 PSI. Here is a link to their home page .. But if you are going to stay with a marine system . Then this or some water filter is a must ..

Poly-Bio-Marine