I recently bought two oscars. They are just babies. no more than an inch long. I have them in a 20 gallon tank. I know...i know its no good. But my dad just told me he would give me his 120 gallon. He used to have a saltwater setup. I was wondering...can i get away with using the existing protein skimmer setup. I am not sure what it consists of. I do know it has all the tubes and bio-balls.

Another question... With this tank comes a massive hood with the lighting. But again, the lighting was for saltwater. It has probably 5 or 6, 5 foot bulbs. Will this be too much for a freshwater/ oscar setup?

Any tips or advice would be greatly appreciated. Thank you!!!

if I was you, I wouldn't bother with a proteins skimmer on a Freshwater tropical tank. regular tank maintenance and good filtration will keep your water in good condition. Protein skimmers are mostly used in salt water tanks, and occasionally in ponds