Is your tank custom? Are you sure it isn’t an 80
gal long (73 x 14 x 21)? I haven’t heard of a 7 foot long regular tank in that gallon range. Even 180
gal tanks are still only 73” long.
More info on the tank is needed. What is your
no3 level currently? You mention a watchman goby but what kind is it (they range from 3” to 6”). Even at 3” you already have 15” of fish at adult hood which
IMO is about the maximum amount you should have until you gain a lot more experience and have better filtration.
Your tank just cycled less then a month ago and the amount of fish you have currently added is going to stress your bio-load until the bacteria can catch up. Adding 1 fish every other week is about as fast as you want to go in this hobby. Also
quarantining all stock before adding to the tank is recommend or else you risk infecting the whole tank.
Even if everything appears fine now within 3-6 months you will start battling
no3 even with your current stock load. Make sure you feed sparingly (
see this post) and let your tank mature for the next 6 months.
As others have mentioned will need more
lr (100-150 lbs) and I’d invest in a quality skimmer as well.
It’s not that you can’t/shouldn’t overstock a tank slightly. It’s just that you have to have very good filtration and a strict weekly 10%-20%
pwc schedule depending on
no3 levels. Having a
sump/refugium to increase total water volume helps greatly also.
Keep in mind that all the filtration in the world is worthless if you have an extended power outage and even your current stock list could die without filtration if it went longer then 24 hours. Battery powered air pumps can help a little bit but even that wouldn’t help an over crowded tank for very long.
With
SW it’s very important to not rush things. Unlike
FW doing large 50%
pwc is not easy or recommend to keep your tank parameters in line. When things start to go bad in
SW tanks it can happen very quickly.