Yeah I had more in a 75g. That won't be a terrible bioload. 4 of my ropes were 6" thin little noodles when I got them and the bigger polys never bothered them. I still worry but they've been together for almost a year now never even see the polys look weird at them. Ropes are escape artists.....no artist isn't a strong enough word ummm F-tards is better keep EVERYTHING locked down!