Clown Killis

[Killi Me Softly]

So, how do I go about cleaning the pre-filter sponge on the intake of the hob, when the Clowns keep laying eggs on it?

[Nik_n]

Remove the eggs first of all. If they are spawning on the sponge they deemed it the best spawning place. You could try adding a spawning mop or some floating plants or mosses. The fish might spawn on them instead of the filter. 

Do you take the eggs out or let them grow up with parents?