cleaner shrimp

[winterburn]

hi guys just noticed all day my cleaner shrimp keeps cleaning my foxface and regal tang not as much the tang but the foxface actuly goes to find the shrinp and lets it clean it is there something wrong here or is this just natrual

 

[winterburn]

he also keeps changing colour and swimming like mad now am worries its got something

 

[winterburn]

rite guys wow my ph had rapid droped to 7.4 so I moved return line so theres more flow on the top of the water retested ph and its 8.4 whats going on why is my tanks ph swinging like mad

 

[kentwo]

Maybe co2 build up leading to acidification.

 

[fishhuman]

What size tank do you have

 

[winterburn]

hi I have a 300litre tank