Noddy wrote:
the usual wood you buy at the LFS will have been used in tanks before,thus often not leaking anymore.
But i still prefer to crub, rinse and boil the wood if i can find a pan to fit it in...
Onthe other hand, any ornaments, be it wood or otherwise, will decrease your tanks watervolume.
And imo you need all the volume of water for your fish at this moment.

X2! Matt, you need a bigger tank, and at the VERY least WAY more filtration. Don't buy decor, but what you NEED!!!!
Have you rehomed any yet?