Hey peeps, I've had my freshwater 30 gallon aquarium now for about a year and a half. What I've noticed is that plants have just stopped growing. They aren't quite dying, but they definitely aren't prospering. On top of that, I used to have a robust snail population which occurred by accident, but now none of them are alive. My water change regiment was about a 20% water change every week where I also vacuumed the substrate. My population of fish is: 7 barbs 2 panda corys 1 gourami 1 tetra I think I need to up this to a 50% water change every three days, but also concerned that it may be the substrate based as it's collection of too much debris. Looking for thoughts and suggestions. My images appear to be too big. I'll see what I can do to get them uploaded.