<a href=showthread.php?s=&postid=14760795#post14760795 target=_blank>Originally posted</a> by NuTom
Why would you say that Matt. I find a QT to be a temporarily home for fish...
Indeed. But to perform a real quarantine, to break the life cycle of something such as Marine Ich, you're talking about 6 to 8 weeks minimum to be sure you were successful. That's a lot of water changing in my opinion.
<a href=showthread.php?s=&postid=14760795#post14760795 target=_blank>Originally posted</a> by NuTom
...and water changes would have a better benefit then a skimmer...
I'm not exactly sure why you would say this.
The protein skimmer removes waste before it can be ammonified into ammonia and then converted to nitrate. Water changing only removes the nitrates once they are present. Skimming skips that whole step. That's why we skim our display tanks. A quarantine system is no different than a display tank except in purpose.
If you are not performing water changing at a rate that keeps up with the nitrate accumulation, then you are presenting deteriorating conditions.
And one of the most important aspects of a quarantine tank is also to prevent a calm and peaceful environment for the fish to recover from their travels, take to prepared food, etc. Now it depends on the fish and how you perform water changes, but too frequent changing can either present the fish with excess disturbance from monkeying around with the tank, or the risk of shock from different water conditions if you err and fail to prepare the current batch of water the same as the previous.
Now I still do perform water changes on a quarantine tank. You have to, just like a display tank. I just use my skimmer to make them less frequent.
And let's not forget that if you are using a skimmer safe medication, then that medication must be redosed for every water change.
<a href=showthread.php?s=&postid=14760795#post14760795 target=_blank>Originally posted</a> by NuTom
... Especially all those skimmer for smaller tanks are cheap made to have any great outcome and not only that if you have use meds there would be no need for a skimmer what so ever. So IMO it would be a waste of money.
There's no harm in overskimming.
I think most people use quarantine tanks that are too small to begin with. We just had a post about this. So perhaps we have different ideas of what volume is to be skimmed.
I have clownfish fry in 2.5 and 5.5gal tanks. Even if I could skim these (the clownfish fry cannot handle any filtration), the volume would be too small to make it worthwhile. I use daily water changes, but doing drip acclimation every day is very tedious.
My quarantine system is 40L gal with 45lbs of live rock* and a sump. In this case, skimming is possible.
Matt
* I do not use copper based medications.