I've got a huge tank, 180 gallons at least (I'm not 100% sure on the gallons, I got it from a friend at work, who'd inherited it with a house he bought). I have several different kinds of fish and plants, but I am having a hard time keeping my plants healthy. I have a single green myrio that alone seems to be flourishing, and while nothing else is out and out dying, it could be healthier. Is there anywhere I could get better lighting and plant supplies without breaking the bank? Any advice on good plant health? Anything would be appreciated, thanks.