Best Tropical fish for cycling

Tropical Fish Tank Cycling

Tropical Fish Tank BacteriaJun 30 2010

I put tropical fish in my tank after 2 days – are they going to die?

I am scared.

I treated the water for chlorine, got a filter, a heater, and added bacteria supplement (Top Fin). The next day, I added plants and fertilized them. Monday (yesterday) I went to the petstore with a water sample, they tested it, and I was given the OK to get 6 hardy fish (Tetras and Platys.) They told me the fish would be fine.

My fish seem great today, but I am very concerned because I keep reading that you’re meant to give the aquarium a whole week of cycling before adding fish.

Tropical Fish CalendarIs the water getting toxic? Is there anything I can do to make sure the chemistry is still okay in the tank?

I don’t think your fish will die no, but you need to monitor them and watch them for signs of distress. Your tank is going to cycle and it will take more then a week to do that. I don’t think you’re even going to be clear of the ammonia part of the cycle in a week. This process will go on from about 4-6 weeks really depending on many things. Those fish you mentioned are hardy and known to be used by many for cycling a tank. To be honest though, it’s very probable it will shorten thier life span somewhat because they will be exposed to toxic chemical compounds for some extended periods of time, but I can tell you this much, they have a better chance of adapting to these conditions vs. say a neon tetra or an angel fish, and this is what they mean by hardy.


Like chicodobe said....

by sporestudy

Your tank won't start cycling until you put a fish in it. Once the tank is cycled the Eclipse are the best...good choice! After you put your fish in, only feed it a small amount every other day for about two weeks. The more they eat, the more they poop, the higher the ammonia goes. For the first couple of weeks, you don't have the good bacteria growing yet to break down the ammonia. Ammonia is the number one killer of captive tropical fish. If your tank gets a little cloudy, and you haven't been over feeding, don't panic, it will go away by itself. It's all balance.

Well my tank is currently mid cycle

by jasonsmadre

And I have a hardy single tail goldfish in it. However, I dont suggest cycling it with fish, there's a lot of stress put on the fish and my goldfish has gotten sick three times since I started. Goldfish produce a LOT of ammonia, and are destructive to any live plants in the tank, and they like to 'redecorate'. Also they cannot live in the same environment as tropical fish, as they are a coldwater species and might eat some of the smaller fish if they're big enough. If you really want to do a cycle with a fish you dont plan on keeping, go buy some feeder fish, whatever ones survive the cycle the pet store will probably take back from you when you're ready...

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