Not familiar with these. Do they run all the time or do you just “polish the tank” then take it off?
exactly. I cant see myself using it more than once a week after this initial fun12 Volt Man;3792664; said:you will find that for most people, you will hardly use the filter because your tanks are always clear.
I bought mine initially only because I had a stubborn green water problems that it cleared up overnight, but after that I only used the filter periodically, as my tanks were always clear anyway..

Absolutely should be effective on a 150 gallon. As far as algae blooms that depends on a ton of factors if your dealing with a green water issue that is constant a UV sterilizer might be a better solution.jbarbaresi;3854372; said:will the XL be effective on a 150 gal? for those of you who have used them for algae blooms how long does the water stay clear before you have to polish it again?