What is the difference betwee the Fluid Master Flush and Sparkle 8100 and 8300P8 models?

8300 is bleach only. The description for 8100 blue cartridge says that in addition to the bleach, it is a Surfactant-based cleaning agent which reduces spread of viruses and bacteria. The 8200 green cartridge is for septic tanks where bleach shouldn't be used.

Is the cartridge supposed to sit above or below the water line of the tank, or doees it matter?

Thank you for your question concerning 8300P8 Flush “n” Sparkle Bleach Kit. The housing unit that the cartridge is inserted into is a sealed container and can get wet. The housing unit in most cases is located above the water line however it can be partially submerged. For additional questions on any Fluidmaster product please contact us at your earliest convenience. Fluidmaster’s Technical Service Department is available Monday through Friday from 5:30 AM through 5:00 PM Pacific Standard Time. Contact options include: Chat www.fluidmaster.com/support E-Mail techsupport@fluidmaster.com and Toll Free 800-631-2011.

Is this product safe for septic systems? I mean, will it kill all the good bacteria in the septic tank?

It's fine. We use bleach in way higher quantity in the washing machine with no issues. Your septic tank is a few hundred gallons of poo. That little amount will do nothing.

Is the cartride supposed to sit above or below the water line of the tank, or does it even matter?

It does not matter. The cartridge gets water directly from the toilet float valve. There are two tubes to the cartridge system, input and output, water is pushed into the cartridge system circles around the cleaning tablet and out through the output line into the flapper and to the toilet bowl.

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Fluidmaster Flush 'n Sparkle Automatic Toilet Bowl Cleaning System

Fluidmaster Flush 'n Sparkle Automatic Toilet Bowl Cleaning System

Product ID: 1533273

Details

Brand
Fluidmaster
Item Form
Tablet
Material Feature
Toilet cleaner
Scent
Unscented
Specific Uses For Product
Toilet

⏳Up to 3 months cartridge life

🚽Cleans with every flush

🧴Powerful bleach formula

€ 33.11

Duties & taxes included

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Description

✨ Flush smarter, not harder! 🚽

TRUSTED BRAND LEGACY - From Fluidmaster, the #1 toilet repair brand trusted worldwide since 1957.
LONG LASTING CLEAN POWER - One cartridge lasts up to 3 months, saving you time and hassle.
TANK FRIENDLY TECHNOLOGY - Cleans without damaging sensitive toilet components—no more costly repairs.
UNIVERSAL FIT DIY READY - Installs in minutes on most toilets with easy step-by-step instructions.
EFFORTLESS SPARKLE EVERY FLUSH - Hands-free cleaning that keeps your toilet pristine without lifting a finger.

The Fluidmaster Flush 'n Sparkle Automatic Toilet Bowl Cleaning System delivers a powerful bleach-based cleaning solution with every flush, lasting up to 3 months per cartridge. Designed for universal fit and easy installation, it protects toilet components by avoiding harsh tablets and liquids, ensuring a sparkling clean bowl effortlessly. Trusted globally, this system combines convenience, durability, and superior cleaning technology for a hands-free bathroom upgrade.

Specifications

ASIN	B0002YOQXQ
Best Sellers Rank	#10,418 in Health & Household ( See Top 100 in Health & Household ) #67 in Household Toilet Cleaners
Brand	Fluidmaster
Brand Name	Fluidmaster
Cleaning Agent Formulation	Disinfectant
Customer Reviews	4.2 out of 5 stars 9,345 Reviews
Global Trade Identification Number	00039961083005
Included Components	Fluidmaster 8300 Flush 'n Sparkle Automatic Toilet Bowl Cleaning System, Bleach
Item Form	Tablet
Item Highlight	Cleans with every flush, Includes bleach cartridge, Up to 3 months of hands-free cleaning, Installs in minutes
Item Type Name	Fluidmaster 8300 Flush 'n Sparkle Automatic Toilet Bowl Cleaning System, Bleach
Item Volume	0.04 cubic inches
Item Weight	6.4 ounces
Manufacturer	Fluidmaster
Material Feature	Toilet cleaner
Material Features	Toilet cleaner
Model Number	8300W-011
Number of Items	1
Part Number	8300
Product Benefits	Refill
Scent	Unscented
Size	1 Count (Pack of 1)
Special Features	safe for pets
Specific Uses For Product	Toilet
Surface Recommendation	Toilet
UPC	039961083005
Unit Count	1 Count
Warranty Description	Lifetime

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Received my product in pristine condition. Great service overall.

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€ 33.11

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered 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 Cyprus.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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