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 science-backed nutrient mastery!

USER FRIENDLY DOSING - Includes measuring cup for exact application and consistent results
VIBRANT CORAL ENHANCEMENT - Boosts coral color and growth by protecting zooxanthellae populations
PRECISION NUTRIENT BALANCE - Maintains optimal Carbon:Nitrogen:Phosphorus ratio for steady bacterial action
SUPPORTS BENEFICIAL MICROFAUNA - Preserves essential aquarium bacteria for a healthy ecosystem
COMPLETE NITRATE PHOSPHATE CONTROL - Gradual, monitored reduction prevents coral stress and algae blooms

RED SEA FISH PHARM LTD. No3 Po4 - x is a 1-liter liquid formula designed to precisely reduce nitrates and phosphates in reef aquariums. Utilizing a unique carbon complex, it supports beneficial bacteria that convert harmful nutrients into harmless nitrogen gas, ensuring coral health and vibrant coloration. The product includes a measuring cup for accurate dosing and is formulated to maintain the delicate balance needed to protect symbiotic zooxanthellae, preventing coral stress and promoting a thriving aquatic ecosystem.

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Brand	Red Sea
Liquid Volume	1000 Millilitres
Item Weight	454 g
Item Form	Liquid
Manufacturer	RED SEA FISH PHARM LTD.
UPC	730773222049
Global Trade Identification Number	00730773222049
Item model number	306050
Product Dimensions	9 x 25 x 9 cm; 453.59 g
ASIN	B004FUEAEI

RED SEA FISH PHARM LTD. No3 Po4 - x Nitrate & Phosphate Reducer 1 Liter

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