its true i had a FRT with my aro for ages it worked fine but the nitrates were throw the roof from the FRT
my FRT was fine for ages never bothered anything the aro used to keep it in its place as soon as i sold the aro the FRT went mad and started to kill fish 2 x tigers/dats and a endy
i dont really know to much about red aros i have always had a gold face
but i got a super red to add to my aro com today so i will be learning as much as i can about red aros now they can be much diffrent to gold aros
your tank looks great if you do loads of water changes say 30% every other day you should be fine with the FRT
No matter how much fileration you have its the nitrates that are the problem with FRT