Re: algea and fish advise
#8
Just to add to this with regards to the 6 line.
The tank is too small for a 6 line , it will very quickly become the dominant fish ( which it has done ) and will not want other fish in 'it's' territory. The tank is too small for the other fish to find a satisfactory distance from the 6 line.
I recently had to rehome my 6 line ( from my 250L ) as he was becoming a bully to my mandarin. Eventually i would expect the 6 line to kill the clown if left in there.
Syphoning is the key , along with more regular water changes.
Defrost the food in a small tea strainer in a glass of warmed RO , rinse in RO and then add to the tank. If you are adding the water the food was defrosted in you are adding a huge amount of PO4 to the tank ( test the water you have defrosted the food in , and be ready for a shock ! )
Recently i cleared a cyano outbreak in my tank by the addition of erythromycin ( an antibiotic ) , but this is a last resort.
Keep your friends close , but your anemones closer ....