Redtail_Shark14

hey everyone I have a question. i hava a sponge filter in my 10G SW tank but ive noticed that it is getting really dirty with algea. do i clean it or leave it? my friend said it is good for Bio-mass but i dont know ill post a pic of it later for you guys to see. but please help me. (the size is for a 20G tank)

Slug

Clean it, its a nitrate and nasty trap. Your better off without it tbh.

Redtail_Shark14

i tested my water like two weeks ago and it said medium nitrates and phosphates maybe thas what made my water lvl rise?

agsansoo

Rinse it out in saltwater only. Then place it back in the tank for another few weeks. Frequent water changes are very important when using sponge filters.