Richmond J.
New Member
Hi, I,ve recently bought a Sun Sun 303B cannister filter for my new 60 gallon set up, It features a UV sterelizer which is the bit that puzzles me as I,ve never used this type of filter before,Whilst I know it helps to prevent algae growth I,m not sure when or how often the UV switch should be turned as the instructions are very vague, Anyone any suggestions?