In a 180 I don’t see a problem with the plecos as long as they can’t be swallowed. Give them cover to get away and you’re good.
I have a 180 gallon and plan to end up with a pair...I have 2 males and 4 females. I think the SD's are temporary and I will probably rehome them eventually...I am curious if the triple beacon pleco and rhinodoras gallego that are in the tank will be tolerated. It all depends if the pair I end up with will tolerate anything else in the 180g. I would say most likely not, but I will have to see how it shakes out.
My 3.5" killer red istlanum tried to mutilate my 4" triple beacon.. albeit, it was in a 4 foot 75 the istlanum had already established as his... so the triple beacon is in a peaceful SA 180 w/ geos and angels now.. hoping his once perfect fins heal up..
love the attitude / personality of aggressive CAs but it's been a challenge trying to stock.. he also tried to murder 3 female and one sub dom male istlanum in a 5 foot 120.. and has killed a BA tetra in one tank and Colombian tetra in another..
