Oh, and the aggressiveness gets worse as they mature and get bigger.

Also, I would recommend maybe adding a few more rocks to your tank. You don't have to go crazy like my tank, but they really do need places to hide and feel secure. This is their natural habitat and it helps to control the aggression by blocking their line of sight. Also, when you stack the rock, make sure there are caves formed that are large enough for your fish. As your fish grow, the caves need to grow as well. Just a suggestion though (about adding some more rock).

ok so i have on major concern here others may or may not agree with me.
this tank is just at a week old and is allready stocked with 6 fish. And no offense to you big will but being that you are new to this hobby you are probally overfeeding, which is what almost all new aquarist do, even some experienced do it. There is no possible way that this tank is fully cycled. And to me it seems that you are just setting yourself up for disaster. i.e. a massive ammonia spike and then a massive fish kill one morning when you wake up.
Cycling is an extremely important part of having a successful and happy long lived aquarium, especially if you ever decide to dice into salt water, and then it is an even longer process. I think that if you ask anyone who has been doing this for awhile they will agree with me on that point.
So like i said keep an eye on your water conditions and your cycle.
I believe that down the line you may in counter some problems that could be delt with much eayser if you would have let your tank cycle before you added fish. I am not trying to be a "hater" but just giving you my 2cents so that you dont get frustrated down that line and give up on the whole thing together.
This is and extreamly rewarding hobby for me and i think it should be for anyone who gets into it

-andrew

i cycled my 55 gallon planted with a fish, a male beta just so i had something producing a little waste but i also jumpstarted it with an old sponge from his old 8 gallon tank, and i am sure even with the tiny tiny ammo spike that i had the water was pristine compare to the small cup that i pulled him from

I've never seen Walmart carry New Life Spectrum, but check it out anyways. I actually have never seen it at any of the big pet stores. I get it at my LFS.

Thanks for the comment on my tank. I appreciate it. As far as cost goes, I have 120 lbs of rock in there. I bought it at my LFS which ended up being more expensive, but that was ok with me because I wanted to support them. They charged me around $1.25/lb. I think you can find it cheaper if you go to a rock yard, but you'll have to ask around. It is called lace rock (at least by fish people - not sure what rock yards call it) and I love it because it has so many caves and is slightly jagges so I can interlock the peices without having to use adhesive. This is important to me because I change the rock formations up every 1.5 months to break up territories and such.

Lace rock is great too because it is very porous (i.e. not very dense) which means yuo can get larger peices for less money since it doesn't weigh a much.

You wouldn't need nearly as much rock as I have since yours is a 29 gallon. If you went with a similar ratio to mine, you would need around 60 lbs of rock, but again, this is just an estimate.

If you ever want to get it in the future, you could order it online. I did a quick google and found this place that sells it:

http://www.customaquatic.com/estore/con ... 52059.jvm1

Not sue about shipping prices or anything, but you can look around at other places as well.