Persistent High Nitrates

jpeeples001

New Member
I have a 115 Dutch Aquarium System. I boughtit used in September and had great test results for nearly three months. I had a satble supply of 35 inches worth of fish, approximately 15.
In November I added two new DAS filters that I bought thru my local store, in Pittsburgh. Previously I used a cottonly material, wrapped around carbon that came with the orgiinal tank but was rather old. In short, since November the nitrates have been 801-20 ppm and off the scale. I've done nearly bi-weekly water changes, of 20-30 gallons at a time. My tank fionally crashed the day after I left for a ten day vacation over CHristmas. The kid fed the zebra eel and ridgeback eel two 75 count deli fresh shrimps and a teaspoon of frozen brine, as I'd instructed and the next day all fish were dead except the sponge starfish and the two eels and the biggest trigger. I have several corals that have done well, and are still okay. We lost about 14 fish though, and eventually the Zebra eel died right after CHRSITMAS. I have no idea what went wrong, possibly the two cukes died and polluted the tank rapidly. I have done three water changes in the last week: 15 gals, 20 gals, 35 gals and my nitrates are 80-120 ppm still. DOES ANYONE KNOW HOW TO GET RISD OF NITRATES SHORT OF STARTING ALL OVER AGAIN? I'm worried about dumping all the 115 gals in that I may lose the healthy soft corals, the starfish and the two last eems and Picasso Tripger that remain. I'm rather fond of the bunch. This is a new Zebra my husband bought for our Jan 1 anniversary to console me. HELP!!!:(
 

peasly1

Member
a few things come to mind,you didnt give much info on your setup...all filtration,circulation,substrate,skimmer,lr...I think w/ all the water changes your tank cannot be even close to stable...2 count of 75 deli shrimp-is that 150 shrimp in 1 feeding,way to much..even if there small and even if you think it all gets eaten,the fish will still produce that much more waste...I would cut back drasticly on feeding and stop water changes for a month to let the tank settle...IMO-HTH
 

peasly1

Member
oh...2 shrimp,wow I'd say thats a little on the light side of feeding for 2 eels.but I doubt that caused the trates that high..
 
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