I've been studying canister filters looking for the best value. Here's what I found so far. It's sorted by lowest to highest cost per gallon per hour flow. I wish I could post a spreadsheet, but it's not allowed. What factors am I missing that are important in a high quality canister filter?
Price Make Model Gph $/gph Watts
$78 Marineland Magnum 350 Dlx 350 0.22 ?
$90 Marineland Magnum 350 Pro 350 0.26 ?
$285 Fluvalxxxx FX5xxxxxxxxxxx 925 0.31 ?
$300 Fluvalxxxx FX5xxxxxxxxxxx 925 0.32 ?
$160 Marineland C-360xxxxxxxxx 330 0.48 ?
$95 Eheimxxxxx Ecco 2236xxxxx 185 0.51 5
$150 Reactionxx EFU 45xxxxxxxx 290 0.52 32
$135 Reactionxx EFU 35xxxxxxxx 250 0.54 27
$85 Eheimxxx Ecco 2234xxxxx 156 0.54 5
$120 Marineland C-220xxxxxxxxx 220 0.55 ?
$70 Eheimxxxxx Ecco 2232xxxxx 127 0.55 5
$147 Fluvalxxxx 305xxxxxxxxxxx 260 0.57 15
$200 Fluvalxxxx 405xxxxxxxxxxx 340 0.59 21
$96 Marineland C-160xxxxxxxxx 160 0.60 ?
$120 Reactionxx EFU-25xxxxxxxx 198 0.61 23
$113 Fluvalxxxx 205xxxxxxxxxxx 180 0.63 9
$94 Fluvalxxxx 105xxxxxxxxxxx 125 0.75 9
$370 Eheimxxxxx Pro III 2080xx 450 0.82 30
$230 Eheimxxxxx Pro II 2126xxx 250 0.92 25
$500 Eheimxxxxx Pro III 2180xx 450 1.11 30
$340 Eheimxxxxx Pro II 2128xxx 250 1.36 25
Price Make Model Gph $/gph Watts
$78 Marineland Magnum 350 Dlx 350 0.22 ?
$90 Marineland Magnum 350 Pro 350 0.26 ?
$285 Fluvalxxxx FX5xxxxxxxxxxx 925 0.31 ?
$300 Fluvalxxxx FX5xxxxxxxxxxx 925 0.32 ?
$160 Marineland C-360xxxxxxxxx 330 0.48 ?
$95 Eheimxxxxx Ecco 2236xxxxx 185 0.51 5
$150 Reactionxx EFU 45xxxxxxxx 290 0.52 32
$135 Reactionxx EFU 35xxxxxxxx 250 0.54 27
$85 Eheimxxx Ecco 2234xxxxx 156 0.54 5
$120 Marineland C-220xxxxxxxxx 220 0.55 ?
$70 Eheimxxxxx Ecco 2232xxxxx 127 0.55 5
$147 Fluvalxxxx 305xxxxxxxxxxx 260 0.57 15
$200 Fluvalxxxx 405xxxxxxxxxxx 340 0.59 21
$96 Marineland C-160xxxxxxxxx 160 0.60 ?
$120 Reactionxx EFU-25xxxxxxxx 198 0.61 23
$113 Fluvalxxxx 205xxxxxxxxxxx 180 0.63 9
$94 Fluvalxxxx 105xxxxxxxxxxx 125 0.75 9
$370 Eheimxxxxx Pro III 2080xx 450 0.82 30
$230 Eheimxxxxx Pro II 2126xxx 250 0.92 25
$500 Eheimxxxxx Pro III 2180xx 450 1.11 30
$340 Eheimxxxxx Pro II 2128xxx 250 1.36 25