Hey Neon. Not trying to be a party crasher here, but I would worry about the short period of time during which you are trying to cycle your tank. I set up my first aquarium on Nov 11 and it is just now getting to the end of cycling. I don't think you are going to be able to complete the cycle by Dec 24th. It appears you are like me and are a complete novice. I would HIGHLY recommend you try to lay your hands on the book "The Simple Guide to Freshwater Aquariums" by David Boruchowitz. I cannot tell you how valuable a resource this has been for me during setup. As he says in the book, read it cover to cover before you buy anything! (although it sounds like you have at least the aquarium already.
![unsure :unsure: :unsure:](/images/smilies/ipb/unsure.png)
) You are going to have to "cycle" the aquarium... there are two methods... with or without fish. I did the with fish myself. Here are the steps I followed:
Setup aquarium - decorations, filter, heater, etc - and fill with water, using a dechlorinator. Let it run for 24 hours and make sure it maintains temperature, filter runs ok, etc. Note on dechlorinator... there is chlorine and there are chloramines. If you have chloramines in your water, you must get a dechlorinator that says it handles both chlorine and chloramines. If in doubt, get one that handles both.
Add fish: You want to add a few, hardy fish to the aquarium. I used 4 platys for mine. Someone else can comment on this, but I do not think that neons are very hardy. Do not feed the fish.
Check ammonia levels. Do this pretty much daily for a while. At first, they will be zero or very low. I have a 55 gal tank and it took quite a while for ammonia to start registering. Only feed fish a little and do not feed if ammonia levels are getting high. If they get too high, you will need to do a partial water change. I tried to keep my ammonia out of the stress range and definitely out of the dangerous range. After a while, your ammonia levels will start dropping. Proceed to next step.
Check nitrite levels (note, not nitrate with an 'a'). This procedure follows that for ammonia but you are checking nitrite instead. The tank is "cycled" when both ammonia and nitrite levels reach zero and stay there. Only at this point should you think of adding more fish. When you add fish, you need to add small numbers and monitor ammonia and nitrite for a few days after adding. You may get what is called a "mini-cycle" as the bacteria which process these waste grow their populations to handle the additional load.
I hope this helps you! From my recent experience, I can tell you this is a slow process and I would not try to rush it. I did try to use one of the products which supposedly introduces the beneficial bacteria needed to process the ammonia and nitrite but I do not really think it helped speed things up... it is still going to take about 6 weeks to cycle.
If you have any questions, you are at the right place to get them answered.
Good luck with everything!
Jason