Main stocking differences between 75G and 125G tank?

[becky46]

Hi all, Looking to get a tank around 75G or 125G. What are the main differences in the options I would have for livestock at these two size points?

 

[JumboShrimp]

After you fill the 75 with sand, rocks (with room to clean the glass), power heads and other equipment, you may not still have that ‘large tank’ feel left. Not to mention fish number and selection differences.

 

[becky46]

After you fill the 75 with sand, rocks (with room to clean the glass), power heads and other equipment, you may not still have that ‘large tank’ feel left. Not to mention fish number and selection differences.

Thanks! What are the main fish I would have to skip over if I went with the 75?

 

[ZombieEngineer]

Tangs are a big one. Even a small yellow or bristletooth is pushing it on a 75 gallon and you're limited to one. With a 125g or larger, you can have multiple tangs even some of the larger ones.

Personally though if you have space for a 125 gallon, just spend a little bit extra and go straight to a 180 gallon. It takes up just the tiniest bit more space but makes aquascaping, coral placement and stability sooooo much better. Also opens you up to the larger tangs like Dory (blue hippo).

 

[adittam]

Tangs are a big one. Even a small yellow or bristletooth is pushing it on a 75 gallon and you're limited to one. With a 125g or larger, you can have multiple tangs even some of the larger ones.

Personally though if you have space for a 125 gallon, just spend a little bit extra and go straight to a 180 gallon. It takes up just the tiniest bit more space but makes aquascaping, coral placement and stability sooooo much better. Also opens you up to the larger tangs like Dory (blue hippo).

The difference between a 180g and a 125g isn't just dimensions, however; it's also about 50% heavier, so you'll have to do some investigation into the strength of your floor system.

 

[adittam]

To the OP, you should definitely go as big as you have space and budget for, because you're going to appreciate being able to put off the inevitable tank upgrade a little while longer.

As far as fish options go, you'll have a lot more options for multiple tangs or medium-sized angels, or a harem of dwarf angels, in a 125 than a 75. You'll also have more room for a decent sized school of small or medium sized fish in a 125 if that's of interest to you.