This is a set of 6 replacement pre-filter foams for the Oase BioMaster canister filter. The BioMaster's pre-filter is its signature feature — a foam module you can pull and rinse without opening the whole canister — and these are the replacement sponges for it. They trap debris before it reaches the main media, keeping your biological media cleaner and your maintenance quick.
Swap a foam in when an old one is too worn to clean (rinse the others in old tank water). PPI means "pores per inch" — the foam's pore density. Lower PPI is coarser (catches bigger debris, clogs slowly, great as a first/pre-filter stage); higher PPI is finer (polishes water and offers more bacterial surface area, but clogs faster). Match the set to your BioMaster model.
Inventory Accuracy
If this item is at low stock, or you are ordering all or almost all of our current inventory, there may be an inventory discrepency. We will contact you about any issues as soon as possible.
Order Processing
Please allow 24 to
48 hrs to process your order. Expect an
email within 48 hrs to let you know your order is on your way.
Store Pickup
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in Store” at checkout, an email will be sent when your order is ready for
pickup. Orders can be picked up during
store hours, see our home page for our current hours. The pick up address is 6637 Easton Rd,
Pipersville, PA 18947
Domestic Shipping Rates
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any, for your order will be calculated and displayed at checkout.
