
Equipment
Brightwell Katalyst Filtration Media (10.6 oz).
A 300g jar of Brightwell Aquatics Katalyst — pelletized bioreactive filtration media that provides a surface for bacterial colonization and helps reduce organic waste load in reef systems.
In-store purchase only. There is no online checkout on this site. Pick this up at our Erie store, or call us to arrange shipping.
- Brand
- Brightwell Aquatics
- Condition
- new
- Fulfillment
- Local pickup — Erie, PA
Pick this up at the shop, or ask us to ship it. Shipping cost depends on the item, so call (814) 456-9445 and we'll quote it — payment is taken upfront before the order goes out.
What it's for
- biological filtration media
- bacterial colonization surface
- reducing organic waste in reef tanks
- bioreactor or filter media use
- water quality improvement
Set it up right
Build guides that use this.

How to build a saltwater sump for a 125-gallon reef tank
The full sump build for a 125-gallon reef: protein skimmer, 700 GPH (gallons per hour) return pump, 300W of heat, media and flood-safe plumbing, priced part by part from the shelves at Sea Cave, Erie PA's aquarium shop since 1975.
Read the guide
How to build an easy freshwater sump — no drilling, no cut glass
A sump doubles your filtration and hides your heater and gear out of the display, and you can build one for a 20-gallon tank without drilling anything or siliconing a single baffle. Here's the whole build, why each part is there, and how to make it flood-safe.
Read the guide
Visit the store
660 East 14th Street,
Erie, PA.
Mon–Fri 12–6 · Sat 11–4 · Sun closed. Call ahead on livestock — what's on the floor rotates.



