I had been using an Aquaclear 300 (Old model, rated for 100 gal
tanks, 300 gph
) in the past with my 90 gal
tall freshwater tank. With the 100 lbs of gravel, and the 100 lbs or so of rock, I estimate the actual water volume at more like 75 gal
. I am restarting the aquarium, and was going to continue using the 300, but have been seeing numerous posts recommending larger filters, as if the units are overrated, regarding their capacities. In the past, I was using this unit with an UGF
, and two powerheads, and never had any water clarity issues, but won't be using the UGF
this time around.
Are the recommendations to oversize or double up on the Aquaclears, simply to be safe, or are they really lower performance than advertised?