Qt Tank Finally Cycled, Is It Safe?


As far as the cycle is concerned, it would really depend on 'strong' or 'big' the bacterial colony is. If you did a fishless cycle using ammonia, you would know that this tank is cycled up to 1ppm, 2ppm, or even 4-8ppm ammonia. So, how much ammonia can the tank process all the way to nitrates in a single day? That answer will tell you how much of a load the QT tank's new cycle can handle.

Sorry:sorry::sorry::sorry: I know you didn't ask about this, but the 75 gallon is quite possibly overstocked as is, and if it is not currently, it definitely will be someday, mostly because of and depending on the size of the tang. Minimum tank size for a Dory fish is about 200 gallon as they grow to a foot long. Even if he is a juvie, he'll need room to grow pretty soon. Tangs are more prone to ich than other fish, and a lowered immunity due to stress from a small environment will leave the fish even more susceptible to disease.

What else is in the 75g? What will you use to treat ich? I'm not imagining corals or inverts with the stock you've listed, so I wonder why you wouldn't treat in the 75g? Personally, I think I'd move the seastar and any other inverts that wouldn't survive treatment to the QT and treat the fish in the DT. This may not be the best practice in most cases, but if you don't have inverts or corals to worry about, it seems best not to cut the tang's tank size in half.

Again, I'm sorry for stepping on your toes, and know you didn't ask for half of this information, but I just hope to help however I can. Good luck!

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