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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🌊 Elevate your reef’s glow with precision nutrient mastery!

ALGAE FREE VIBRANCE - Effectively prevents nuisance algae, keeping your aquarium crystal clear and visually stunning.
CORAL COLOR BOOSTER - Enhances coral coloration by optimizing zooxanthellae health and growth.
MICRO FAUNA FRIENDLY - Maintains essential beneficial micro-fauna, preserving your reef’s natural ecosystem.
BPA FREE READY TO USE - Safe, liquid formula with no batteries required—easy integration into your reef care routine.
PRECISION NUTRIENT CONTROL - Monitored dosing ensures gradual, accurate nitrate & phosphate balance for a thriving reef.

Red Sea No3:Po4-X is a 1-liter liquid biological reducer that precisely controls nitrate and phosphate levels to prevent algae growth and enhance coral coloration. Its unique carbon complex supports nutrient-reducing bacteria and maintains beneficial micro-fauna, ensuring a balanced, vibrant reef ecosystem.

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Product Dimensions	9 x 25 x 9 cm; 453.59 g
Item model number	306050
Pet Life Stage	All Life Stages
Item Form	Liquid
Allergen Information	BPA-Free
Color	as per image
Volume	1 Liters
Quantity	1
Specific Uses	Active
batteries required	No
Batteries Included	No
Item Weight	454 g

Red Sea No3:Po4-X Nitrate & Phosphate Reducer - 1L

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