Cycle still in 1st stages after a week?

Lalaland

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Apr 2, 2004
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My 37g tank has been up and running with 4 rather large goldfish for cycling for a week now. During this week I've done one 50% water change (long story) 5 days ago, and a small 10-15% change two days ago, there was some stuff i needed to vaccum out of the gravel.

As of right now, Ammonia levels are < 0.08 ppm, Nitrites are present, but barely detectable, and Nitrates are at 0. Water is clear and I'm using a Fluval 204 for filtration. Water temp is at 73F, no heater.

Am I right to believe that I might still be at the first stage of the cycle and that my Nitrites should be going up in the next few days? I wish I tested the water before, but I just got some new kits today.

I was expecting to cycle a bit quicker, I stressed the heck out of those fishes during two days with the whole move last weekend. Although in good shape physically (fins are upright, color is nice), I notice they flee when I approach the tank and they often act nervous. If the cycle takes a couple more weeks I might lose a couple of them. I'm hoping not, even though they'd be going back to the LFS after the cycle is completed. Does the cycle accelerate once ammonia is starting to get converted to nitrites?
 
Cycling a tank from scratch tends to take at least a few weeks. Many report taking over a month to finish a cycle. A week isn't enough to really get a tank started on its cycle. The goal of cycling with fish is to do as many water changes as possible whenever you have time in order to keep your fish as comfortable as possible. The water changes should not retard the tank's cycling process, since as long as your fish produce ammonia, the cycle will continue.

This is one of the reasons why I'm an advocate for fishless cycling. The entire cycle can be done without doing a single water change during the process, and no one needs to worry about any fish being adversly affected.

HTH
-Richer
 
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