New to the forum and have a question for you guys... I have a 75 gallon with gravel substrate and fake plants. Decor is just rocks making caves and overhangs for the fish with 2 very large fake plants. I have a pair of 6" dempseys along with 3 others. My filtration now is a fluval 405 and fluval 105. Do you think since the fish are larger and eat more I would need a larger filtration system? There are 2 air pumps one at each end just to circulate and move the water around. Any advice would be greatly appreciated.







