These are a GREAT deal bc I didn’t know that 2 boxes came with the order. These filters are the BRAND NAME filters which make a HUGE difference in QUALITY!! Others I’ve bought from in the past Sent the “brand name BOX” but the filter was DEFINITELY A REPLICA, wasn’t same color as it should have been, there were pretty much like 10 charcoal granules inside the filters & obviously didn’t do it’s job at all.. WOULD ABSOLUTELY RECOMMEND THIS SELLER/PRODUCT!! Oh ya & the filters last me about 2-3 months before I have to change to a new one (I have a 20 gallon tank with shrimps, a few fish, snails & a bottom feeder fish.) BUT that is with proper maintenance, water changes, live plants help I think, and before every water change/filter change be sure to rough up the gravel so all of the crap that sunk underneath it comes up from underneath the gravel.
