need help

[creasy]

well had a reef tank and then i went fish only i have a dog face puffer clown trigger and a lion fish and a naso tang blue hippo tang and a fox face i feed them silver side and krill plus pellets but my tank looks like it not as clean im doing water changes but looks like a lot of waste lingering any kind of cleaner fish i can get snails hermit crabs

 

[small triggers]

what kind of filtration do you have? i see have a protein skimmer, a calcium reactor do you have a sump? how much live rock do you have, what size are your fish? how much are you feeding? what are your nitrite and nitrate readings and is you water looking yellow or green ?