irmuddled's fish journal

very very fishy…

Nitrates are sky high…

Well, here’s the first update with any real issues. For the last two weeks my fish started to die, and I wasn’t sure why because I was very understocked and I’ve been pretty anal about what I do with the tank. Up till this week it ocurred to me to check the nitrates since I’ve been fertilizing with KN03 (potassium nitrate)… I didn’t bother before because I dosed exactly what chuck’s aquarium calculator said using a mini scale so I thought it would be safe. 10.75 grams three times a week.

My surprise… the nitrates were at 60ppm! BAH. They’re supposed to be at 20ppm. It was tuesday – water change day – so I took out and replaced 50% of the water, and yesterday before dosing dry ferts I check the nitrates again. Still pretty high at 40ppm. I did some browsing and apparently those nitrates are harmless to fish… but so far I’ve lost 2 red platies and 4 sterbai cories. 😦

Current stock of fish:

  • 2 angelfish (5″ and 2.5″)
  • 2 red platies
  • 2 sterbai cories

I was planning on placing an order with flguppiesplus for 25 cardinals and a german blue ram pair, but I’m not sure about it now. I’m going to look up if I should do another water change to keep the nitrates down and for the meanwhile no more dosing kn03. Today is plantex day.


Filed under: 55G Tank Log, , , , , ,

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September 2009
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About the Author

My name's Maria, and I live at San Diego, CA. Hablo español! When I'm not writing 100 paragraphs about my fish's swimming patterns, I work at a popular chain pet store's corporate offices being a robot. I also go to college, studying web design but I'm reconsidering my major into marine biology. I wonder why?

Tank Specs

Capacity: 55 US gallons (48", 12", 21")
Lighting: Coralife Aqualight @ 2.4 wpg
CO2: GLA Primo Pressurized CO2 System
Filtration: Marineland Emperor 400b HOB
Substrate: Caribsea Eco-Complete
Dry Ferts: CSM+B, KN03, KH2P04, K2S04


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