Can this be diluted with rodi water?

I know of several reef keeper who dilute with rodi water when using smaller doses, although I would contact Red Sea for the right mixture

I am running vinegar for nitrate reduction. How long do I need to stop the vinegar before I start this??

Suggest you call Red Sea. Their customer service with this product is helpful. Alternatively, you can also send an email. I've used both methods in successfully communicating with them.

Does this take longer for large tanks? I have 150 gallon s with a 68 gallon sump.

tank size does not matter I have 180, and I dose it with a dosser which is the best way to reduce nitrates, this stuff is excellent....it will take a while for the bacteria to form (should not be more than a month) , you will notice first a white film on your glass, once that starts the bacteria is growing and the white will disappear, the fish and snails love the bacteria. Again it needs to be done daily and your nitrates can be either gone, or reduced down to nothing if you prefer to have just a small amount. Again a dosser is the best method Jaebo cheap and works well under 60.00 Hope this helps

Can this be used in a freshwater aquarium?

It is suggested to use for salt water aquarium

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Red Sea NO3:PO4-X Nitrate & Phosphate Reducer (NOPOX), 1000 ml / 1 Liter

Product ID: 2334538

Details

Brand
Red Sea
Item Form
Liquid
Item Weight
16 ounces
Liquid Volume
1000 ml
Number of Packs
1

🐠Optimized for aquarium fish

💧1L liquid formula

⚖️Balances nitrate & phosphate

EC$304

Duties & taxes included

In stock

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Description

💧 Clear water, vibrant life — your aquarium’s secret weapon!

GENEROUS 1 LITER SUPPLY - Long-lasting treatment that supports consistent water quality management.
EASY TO USE LIQUID FORMULA - Simple dosing ensures hassle-free maintenance for busy professionals.
ENHANCES FISH HEALTH VIBRANCY - Promotes a thriving aquatic environment, making your tank the envy of your social circle.
TRUSTED BRAND WITH PROVEN RESULTS - Red Sea’s formula boasts 4.5-star ratings from over 850 aquarists worldwide.
PRECISION NITRATE PHOSPHATE CONTROL - Keep your aquarium water crystal clear and healthy with targeted nutrient reduction.

Red Sea NO3:PO4-X is a 1-liter liquid treatment designed to reduce nitrate and phosphate levels in aquarium water, promoting healthier fish and clearer tanks. Highly rated by over 850 users, this trusted formula offers easy dosing and long-lasting effects, making it an essential for any serious aquarist.

Specifications

ASIN	B004FUEAEI
ASIN	B004FUEAEI
Best Sellers Rank	#31,361 in Pet Supplies ( See Top 100 in Pet Supplies ) #244 in Aquarium Water Treatments
Brand Name	Red Sea
Customer Reviews	4.5 4.5 out of 5 stars (852)
Date First Available	December 10, 2010
Global Trade Identification Number	00730773222049
Item Form	Liquid
Item Highlight	for Saltwater Aquariums
Item Weight	16 ounces
Item model number	306050
Liquid Volume	1000 ml
Manufacturer	Red Sea
Manufacturer	Red Sea
Manufacturer Part Number	306050
Model Number	306050
Number of Items	1
Number of Packs	1
Pet Type	Fish
Product Dimensions	3.54 x 9.84 x 3.54 inches; 1 pounds
Target Species	Fish
UPC	730773222049
Unit Count	1 Count

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