Hi, Ive just got an almost 200mm Feather Fin Catfish, which has been in a 3ft tank only half filled and it was very green with no filtration, it is about 8 to 10 years old, so I was told., its now in a filtered tank with a few other fish and seems to be doing very well, I appreciate this is maybe an older fish but luv it and want to look after it the best I can, I've got the algae tablets and a hidden cave area for it to go in and out of, but should I put some sort of wood in the tank, and is there anything else that is a necessity for this species to live a long and happy life, is a very healthy looking FF. Thanks