What size pump for Gamma UV Sterilizer 15 watt

[randy 13]

Title pretty much asks my question. Thanks!

 

[who dey]

maxijet 1200, thats what i use

 

[falconred]

2 big use max 900

 

[randy 13]

I have a RIO 800. I know RIO's aren't too great but this is going on a freshwater tank that has turned green. Do you think the RIO 800 would be large enough? Thanks for your help!