Penguin Bio

Question for people with marinelands penguin bio-wheel filters?

I have one thats capable of taking two filter cartridges, is it worth putting two in? I only have one in the moment
its a 30 gallon filter on a 20 gallon tank with two small fantails in.

I wouldn’t worry about it, the bio wheel holds the biofilter for you.
I have this brand and I only use one.

Use two if your cycling still, the extra carbon would be nice, but if the tank is fully cycled one would be fine.

Penguin 100B Replacement Bio Wheel Assembly PRBW100B $8.99

Penguin 170B Replacement Bio Wheel Assembly PR1940B $8.99

Penguin 125B Replacement Bio Wheel Assembly PR1935 $8.99

Penguin 330B Replacement Bio Wheel Assembly PR1945B $8.99

Penguin 99B Mini Replacement Bio Wheel Assembly PR1932B $5.99

New Penguin bio-wheel filter bio-wheel bearings 2 sets $3.00

Penguin 150 Bio-Wheel Aquarium Filtration System Filter $20.99

PENGUIN BIO CARD PROMO KENNER SUPER POWERS MINI RARE $5.00

Marineland Bio-Wheel Power Filter Penguin 200 New $29.99

MARINELAND PENGUIN BIO WHEEL 350 FILTER $31.99

Bio-Wheel Assembly for Penguin 200B and 350B Filters $9.00 Replacement Bio-wheel assembly for the new Penguin 200B or 350B power filters....

Marineland Rite-Size A Cartridge for Penguin Mini, BIO-Wheel Mini & 100 (6pk) $9.99 Replacement Cartridge for Penguin Mini, BIO-Wheel Mini & 100 Filters...

Bio-Wheel Assembly for Penguin Mini, Hex 5, System 3 and Explorer Filters $3.34 This is the replacement Bio-Wheel Assembly for the Mini-Penguin, Hex 5 Eclipse and the System 3 Eclipse System....

IMG BIO 3 CART PENGUIN 125 6PK $7.16 BIO 3 CARTRIDGE PENGUIN 125 6PK...

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