I was looking into a eheim compact 3000 to run a spray bar along the back of my tank as my crystiprofi e700 doesn't pack enough punch to have one more than 30cm. I have seen one cheap but I have also seen some fluval 405s going cheap. I know they are only 1500lph but would that produce a relatively strong flow along the back of a 3ft tank? Just thinking the extra filtration as well as flow would be a bonus if it is up to the job