Fish Quarantine made easy
I have been keeping fish since I was 10 years old and my grandmother gave me my first stainless steel tank. In about 1983 I got interested in saltwater (OOPS) and started with Fish only in a 90 gallon tank. I have used the same methods of quarantine for fish since shortly after beginning with fresh water fish. I go by the KISS method or the "KEEP IT SIMPLE STUPID" method. So hope you not sorry you asked
Diazreeflife but here goes.
Quarantining is a very simple thing, first I gather up everything I need. Find a good quiet location, somewhere off the beaten path, I usually keep mine in a nice quiet location away from my display tank so as not to bother the new fish to much with noise and movement for the first few days.
1 - I use either a 10 or 15 or 20 gallon tank, pretty much depending on the fish I plan on buying, you don't want to put that 4" Blond Naso Tang in a 10 gallon but it will do fine in a 20 for a few weeks. And I don't want to hear anything from the Tang Police, I have been doing it this way for 30 some odd years now and "NEVER LOST A SINGLE TANG" to small tank syndrome.
2 - Small heater 50 watt or 75 should be plenty. I like to use a heater controller like this
Aquarium Heating & Temperature Control: Azoo Micro Temp Controller becasue as I said more heaters get stuck on then go out and a fish will do just fine at normal house temperatures but tend to not do well being par-boiled by a stuck on heater.
3 - A good high flow HOB filter, preferably one with dual filters so I can hang a small bag of carbon on one side and use filter pads. Also several fresh filter pads. Don't like canster filters cause they are a PITA to clean. With a HOB you pull the old pad out and slip a new one in.
4 - A red clay pot or Rubber pot (not plastic as they tend to float) with one edge chipped away or tipped on its side so the fish has somewhere to hide. If you chip away one side make sure you make it as smooth as possible, clay pots tend to leave very sharp edges and you don't want your nice new tank to cut itself. Clay or Rubber will not absorb any medicines you might have to use also.
5 - Extremely important is a lid, Glass or Screen either way to keep the new inhabitant in the tank. This is especially important with Wrasses, Anthias some clowns and Blennies. If I am using glass I make sure to leave the top or cover off the filter, this allows for plenty of gas exchange that everyone is always so worried about, although I have used completely sealed tanks before with out an issue too.
6 - A small light low wattage light, I use a good old goose neck desk lamp with a low cost 15 watt florescent bulb. Not necessary if the tank is in a room that gets natural sunlight.
Notice, no sand, no rocks, no goofy little shipwrecks or bubbling moss monsters. Mostly this is because I always tear everything down, give everything a really good cleaning after I transfer the fish to the display tank.
But if you use rocks or gravel and you happen to have to treat the fish with something like Copper its much easier to get a precise dosage. If you have a 10 gallon tank and filter with no sand and rocks you most likely have 10 gallons of water. If you use sand and 2 med rocks you have to use best guess dosing which I do not like to do.
Also using sand and rock the medicine can be absorbed into the rock lowering the strength of the dose, once again causing best guess dosing. Plus when quarantining the next fish it may leach out and cause problems. So no rocks or sand.
I usually try to make my trips to the fish store a day or two after I do a water change on my main display tank and I use about 3/4's off that water to 1/4 new to fill the QT tank, that way the water parameters in the QT tank is pretty close to the display tanks so there is even less stress on the fish when it gets dumped in.
The only thing I ever monitor is the Ammonia levels and if I see them creeping up I will do small water change but rarely is this needed as most fish will do just fine with elevated levels unlike corals. I set up the filter and turn it on and set the heater a the same temperature that the tank the fish is going into and let the tank run.
One the Fish has been through the normal acclimation process and is in the tank I leave it alone for at least an evening, peeking around the corner if I really want to see it allowing it time to be able to check out its new tank and settle down. The next day I will try and feed it a very small amount, turning off the filter and backing off far enough so as not to spook the fish but I watch and see if its eating. Over the span of several days I will try several types of food if it does not eat until I come across one it does.
I try and keep a fish in quarantine for 4 to 6 weeks which is basically life cycle of Marine Ich, once this time has past I will put it in the tank and tear down and clean the tank. And I put everything inside the tank and store it till the next trip to the fish store.
I do not quarantine Coral and never have, but I do dip every piece using
Coral Rx Coral Dip: Aquarium Acclimation & Quarantine religiously! It only take on bout of Flat worms or having 1/2 of your high end Zoa's wiped out by Zoa eating Nudibranchs and you remember to do every piece.