Is It Safe To Use Lines, Hairnets, Etc?

[Pl*co]

To grow plants like java moss or riccia I know people use fishing line, hairnets, netting over them but I'm concerned that bottom dwellers might get caught it in. Is that likely to happen? And what would be the safest to use?

 

[fishyfeet]

I tried a hair net with riccia once and had to cut my pleco free, di