It has a type of grating on it, like a strainer.JeffH;504814 wrote: Do you have a sponge on the MJ? They can be just as nasty to a nem as a Tunze.
JeffH;504814 wrote: Two choices with nems.....Cover all powerheads with sponges.....or wait for a nem to get snagged in one. If the nem stays put, you might be ok without sponges for a long time...but like you found out...one morning wake up to a mess.
Dakota9;504143 wrote: Some think it's the vibrations the powerhead creates that attracts the nem
Rbredding;504987 wrote: THAT's what SHE said...