Is this size compatable with the Rite size brand, E

I really can't tell you. I use size "2"

Why does my second box of filters have little bits of carbon spilling everywhere?

Because the smaller bits of carbon come out through the slots in the plastic backing that holds it in. I've used these replacement filters for my 10 gallon aquarium for almost 20 years and all the boxes have small carbon bits in them. In fact, I shake new filters carbon side down over a trash can to get all the little tiny pieces out so they don't wind up in the aquarium and building up over time. My practice is shake them for about 5 seconds, then rinse under a faucet carbon side down before I start on a filter cleaning and set aside on the sink to drain. I pour about 1 quart of old aquarium water over them right before installing to rinse out any chlorine from the faucet rinse.

Are these similar in size to cartridges size E?

No, they are smaller than Cartridges size E. Size E is for 20-40 gallon tanks, these are for 5-15 gallon tanks. I hope that helps :)

Will these cartridges fit in a Top Fin 75 filter unit?

No, Terrence, we don't think it will fit, although we have not researched using this cartridge with that filter. The cartridge your filter takes appears to be a very slightly taller, narrower one.

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EZ-Change #3 Filter Cartridge For Aquarium Filter, 6 Count

Product ID: 3008779

Details

External Testing Certification
NSF
Item Weight
11.2 ounces
Material
Paper
Product Benefits
Improves water
Product Dimensions
6"D x 4.5"W x

🧪Premium activated carbon

⏱️3-stage filtration in seconds

♻️Pre-assembled, no mess

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Description

♻️ Refresh your tank, refresh your vibe—filter like a pro in seconds!

TRIPLE ACTION PURITY - Advanced 3-stage filtration removes odors, discoloration, and impurities for crystal-clear water.
BULK PACK CONVENIENCE - 6-count supply keeps your aquarium maintenance hassle-free and on schedule.
LONG LASTING FRESHNESS - Premium activated carbon ensures your aquarium stays vibrant for 2-4 weeks per cartridge.
EFFORTLESS SWAP IN SECONDS - No tools, no mess—just shake, rinse, and replace for instant freshness.
TAILORED FIT FOR AQUA TECH - Designed exclusively for 20-40 and 30-60 Power Filters to maximize performance.

The Aqua-Tech EZ-Change Aquarium Replacement Filter Cartridge #3 is a 6-pack of pre-assembled, premium activated carbon cartridges designed for Aqua-Tech 20-40 and 30-60 Power Filters. Featuring a 3-stage filtration system, these cartridges remove odors, discoloration, and impurities quickly and easily with no messy assembly. Recommended for replacement every 2-4 weeks, they ensure optimal water clarity and quality for your aquarium.

Specifications

ASIN	B004ZR9TDI
Best Sellers Rank	#6,729 in Pet Supplies ( See Top 100 in Pet Supplies ) #34 in Aquarium Filter Accessories
Brand Name	AQUA-TECH
Customer Reviews	4.7 4.7 out of 5 stars (8,128)
External Testing Certification	NSF
Global Trade Identification Number	00047431902770
Included Components	See label
Item Dimensions D x W x H	6"D x 4.5"W x 6.75"H
Item Type Name	Filter Cartridge
Item Weight	11.2 ounces
Manufacturer	Aqua-Tech
Manufacturer Part Number	PL-T133-06A
Manufacturer Warranty Description	See label
Material Type	Paper
Model Number	PL-T133-06A
Number of Items	1
Product Benefits	Improves water quality and clarity with a 3-stage filtration system and activated carbon.
Set Name	EZ-Change #3
UPC	047431902770
Unit Count	6 Count

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€ 43.13

Duties & taxes included

In stock

Sold byAmazon PortugalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Portugal.

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Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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