i recently purchased a 2nd hand tank set up,complete with a few fish.A big pink angel fish,a plecostamus,a hatchet,a bristlenose catfish,a couple of neons and another one that looks like a female sword fish,unsure of what it is.The tank hadnt been to well cared for and was filthy.The filters were all gunked up so i gave it a good clean out and set it back up again and put a nice big piece of driftwood in that had come with it.Within a matter of a week the water was brown so i took out the driftwood and have since done a 50% water change once a week for 2 weeks.Its looking good now,and reading through the threads learnt that soaking the wood may help,so its in a bucket soaking for as long as it takes.The tank has no light,do i need one? There is a few live plants in there and i intend to get several more.I have heaps more questions but will save them for another thread! Thanks