Lmao!Just clean them with water should come out. Brown algae is easy to take out.
If it doesn't come out there's a thread about dishwasher and a filter check it out
Seriously. This. You can leave it out in the sun for a while before you rinse.Boiling water with bleach
Dip for about 15 seconds
Rinse
Soak in water with a lot of prime
No scrubbing needed
Yea listen to MKIA lolJust spray it with hot water from your faucet and it should come off. I have used this method to remove algae from lots of different things such as air stones, filter sponges, etc.