ok i am thinking of getting a 3-4 inch flagtail prochilodus for my 90 gallon. the 90 has 3 peacock eels at 8 inches and 1 black ghost knife at 3 inches. the 90 has a large peace of drift wood and the 90 has algae on 3 of the 4 sides. i would like to get the flagtail to clean the glass because this is going to be a discus tank. the algae was going to stay but is dying off and looking bad. the flag tail is 24.99 is that also a good price