I have a 55gal about 4.5 yrs old. I have 4x65 watt PC
, aqua-c remora skimmer. I only have a frogspawn, rock anemone, and a small colony of zoos. I have a black occelaris, neon goby, spotted mandarin, and a PB tang. I am interested in upsizing because my tang is growing and I would like to give him more room. I want to use my existing equipment and just swap out my tank. I looked into a 75 and 90 gal
. A 90 is only 80 bucks more, same dimensions but 3 inches taller. I am on a tight budget, and figure I would need to upgrade the filtration if I were to get a 90, I would also have to upgrade the lighting at some point. Any ideas or advice appreciated!