Instruct: Classify a given review into positive or negative sentiment.
Query: GREAT FOR THE PRICE

I like the bioscrubber, I'm using this filter in a 55 gal tank for my red eared slider turtle. The tank isn't totally filled, but it's more than half full and it works good. You just have to have filter refills on hand. I tried to clean the filter refill that came with the system, but it didn't work, very nasty, too much gunk. It's worth it.