Appreciate that Cathy! Puffers are an awesome fish! Putting plants in a brackish tank can be tricky because of the salinity. I personally don't have much experience with plants in brackish water, but I've heard that some anubias plants and Java ferns have worked in brackish tanks. Since anubias plants tend to be very hardy typically, I could see them doing ok in low-end brackish water.

@@FintasticFreaks Hey thanks very much. That's good to know 😊. Have a blessed day.

For a first puffer, I'd highly recommend pea puffers. They don't grow very big at all, you don't have to worry about their teeth unlike a lot of other puffers, but they still have big personalities.

Yes. this will be there forever, or at least that's the plan. Typically green spotted puffers max out around 6 inches so a 75 should provide plenty of space for 5 of them.

what are you going to put in it

I do. I use seachem prime as well. I use prime for my 2 brackish and all my freshwater aquariums. It's good stuff. 👍 Some people have tried bottom dwellers in larger tanks, I've seen some folks do fish like knight gobies, but they also provide the gobies lots of hiding places as the puffers can get a bit nippy sometimes.