Great looking tanks. What is the age of them? Also what lighting are you using and are you adding CO2 or any ferts? I'm brand new at freshwater and you have the look that I would love to have someday.
The 75 is 3 months old. The 36 is two years old in this configuration. Both tanks have CO2 and they get dry ferts. The 75 has 175 watts of light. The 36 has 130 watts.