QT and DT

Bearkat1234

New member
Why do you have to cycle your main tank and not a Quarantine tank? How can your fish stay alive in a QT if you do not have to cycle and will die in a tank that must be cycled?

Is a Quarantine tank a must? Or can you be successful without?
 
IMO a QT is what separates long term hobbiest from a craigslist ad.

In a perfect world a QT would be cycled and stay running but, this is not really practical. I keep a sponge filter in my sump so if I need my QT I can set it up pretty quick. Also, my QT is small enough that water changes can keep things in check.
 
I agree I don't get it, the QT house fish for longer than a few days which for me says you either keep it running and cycled forever or you stress the fish out when detritus causes an ammonia spike.

For me, a nano tank guy, a QT is not worth it... I can't keep big fish, I don't want to invest in a second system that would be comparable to my DT, but I also know I'm limited on the number and types of fish I can keep.

For these reasons I only by fish from a clean fish store, I drive 2.5 hours to go there, I only go for hardy type fish and I inspect them making sure they have been in the store tank for over 2weeks. The place I go puts the fish I want in a small acrylic box so I can check it out closely.

If I had a big system with big, exotic and expensive fish I'd run a QT for sure that would basically be a fully functioning nano tank, cycled.
 
Last edited:
You don't absolutely need a QT. Like /u/gone_fishin said, if you keep a sponge filter in an out-of-the-way location in your sump or your DT if you run a nano, the nitrifying bacteria will live in that sponge and when you place that in your QT, it automatically cycles that tank. It may take only a week to fully cycle a QT with this method. The whole reason a tank normally takes so long to cycle is because you are trying to develop those bacteria from scratch, but with the sponge filter, you have whole colonies already made.
 
Go with the QT because if you don't you can lose an entire tank. It only takes 1 fish to infect it. Then, you have to look at an empty tank for 12 weeks while you wait for the ich to die.... your choice, but i'd recommend it
 
Go with the QT because if you don't you can lose an entire tank. It only takes 1 fish to infect it. Then, you have to look at an empty tank for 12 weeks while you wait for the ich to die.... your choice, but i'd recommend it

+1. A QT is basically an extra means of security to keep your DT disease free. I would recommend one as well.
 
+1. A QT is basically an extra means of security to keep your DT disease free. I would recommend one as well.

+1 I bought one of those 29 gallon complete systems with stand, heater, light, and top for like $199 on sale to use as a QT. I set it up like a mini full time system with rock and sand. I know everyone may not have the room but it has a small foot print and I keep a pair of clowns in it permanetly so even when not using it as a QT it looks like it is another tank in the house. My hospital tank on the other hand is never full (20L and kept in the basement) and I hope it never has to be.
 
I'm new to this but my plan is to take cycled water and a sponge and some ceramic rings from my cycled tank and place them in a HOB filter on my QT. After having the fish in QT for 4 weeks, put the fish in the display tank and then empty the QT. Repeat the above for new fish. There will be some water changes in the QT during those 4 weeks with top offs with RODI.
 
Back
Top