I was cleaning my 405 canister sponges by rinsing them in water from the aguarium and there was all these black spots inside the sponges (foam) that would not rinse out. After further investigation buy cutting the foam open there were these black worms that looked like black leaches but they would grow longer buy extending from the inside out. Thier diameter was larger than a smilie face
. Any idea what they might be? I left them there , should take them out ? Up and running for 8 weeks.
Appreciate any help,Thanks,Rob.
Appreciate any help,Thanks,Rob.