Hello guys I am new to this forum but not as new with
SW fish or setups... I have several questions regarding several posts that I have seen about Moorish Idols.
Back when I was in university I had an 90 gallon tank with live rock, a plenum and what you are now calling a fuge... I, very successfully kept a Moorish Idol for about 3 years and he was donated to my local aquarium when I moved

... Nowadays I see many of you guys not recommending these beautiful fishes, I agree these are extremely difficult to keep in captivity but it can be achieved when you are seasoned enough and if you do things right... I believe that the reason he thrived was that he was the only big fish besides a Harlequin Tusk fish in the tank. I had a pair of perculas maybe ocellaris back in those days you got whatever they had, and several gobies. I can almost surely say that having a Moorish Idol was very rewarding and am looking in getting another one now.
The problem here is that now my aquarium is a 75g one, so do you guys think that after a lengthy cycling process and getting everything done also having a stable environment, having a Moorish Idol all by itself with 2 or 3 smaller fishes be criminal???
I am thinking of exchanging my aquarium in 2 or 3 years to a 125 or 150 once my new house is finished.
Should I go for it, should I pass? There are only 3 fishes I really love and they are the Regal Angel, the Moorish Idol and the Lineatus tang. What should I do???
Please help me decide, I do want one of these three fishies in my tank.
TIA
Homero