I have 2 porqs in a 125 gal..they eat alot to say the least,which causes all kinds of waste..I have a huge skimmer,4-5in dsb and about 150 lbs of lr to help take care of the waste,you would lose just about everything in the tank due to the porq consumming it..then your tank will be empty and the porq will quickly outgrow that size tank..like folks have said this is one of the fishes that really get you hooked to it like a cat or dog or horse or whatever your favorite pet is, and losing it really bums us out...get a bigger tank 125 or larger,I know its alot but its a good goal to look foward to,for a good reason