What dosage would i need for a 45 litre tank please

I prepare my water in 10 litre buckets, I put 5 drops in each bucket of water before adding to the tank. So for 45 litres of fresh water you would need 23 drops. The bottle comes with a flip lid and a small hole so it is very easy to dispense one drop at a time. It doesn’t seem a lot but it works, the best you can buy. I never use anything else. Hope this helps.

I’ve been trying to cycle a new sponge filter 60 litre freshwater tank and nitrites level is high. Can this product help reduce nitrite levels?

Yes it will, but reducing nitrates isn't it's main feature, do small daily or every 2 days water changes, the levels have to spike before they drop,add some fish food even if the tank is empty and also check the tap water levels.

Very expensive its only£6 80 in my local pet shop have you anything cheaper

Prime is very concentrated. You only need 10ml to treat 400 Litres! most other products require about 10ml to treat 40 L. So it lasts about 10 times as long as them. If its double the price... that's still 5 times better value. Prime also detoxifies ammonia and nitrite.

do you need to use this every 48 hours? or just the once then every week when doing a 20% water change?

If you want to use this specifically to detoxify high levels of nitrite, nitrate etc, then you need to dose every 48 hours. If you wish to use it to condition water change water, then you only need to add it to the water that you're putting into the aquarium.

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SEACHEM Prime Concentrated Conditioner, 4 Litre

Product ID: 48995767

Details

Brand
Seachem
Item form
Liquid
Item weight
0.45 Kilograms
Liquid volume
4 Litres
Manufacturer
Seachem

💧4L ultra-concentrated volume

⚗️Detoxifies ammonia & nitrite

🛡️Neutralizes chlorine & chloramine

VT92719

Duties & taxes included

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Description

💧 Transform your tank water like a pro—because your aquatic friends deserve the best!

ULTIMATE WATER DETOX - Safely neutralizes chlorine, chloramine, ammonia, and nitrite for pristine aquatic health.
CLEAN ODORLESS DOSING - No smell, no residue—perfect for professional-grade aquarium maintenance.
UNIVERSAL COMPATIBILITY - Safe for all freshwater & marine species, including fish, inverts, and plants.
EMERGENCY READY RELIABLE - Use up to 5x dose for nitrite spikes; trusted by 37,000+ aquarists worldwide.
POWER PACKED 4 L CONCENTRATE - One capful treats 200L—max efficiency, minimal effort.

Seachem Prime Concentrated Conditioner is a 4-litre powerhouse designed to detoxify chlorine, chloramine, ammonia, and nitrite in both freshwater and marine aquariums. Highly concentrated for long-lasting use, it supports biofilter health and is safe for all aquatic life. Ideal for routine maintenance, emergency water treatments, and new setups, it ensures crystal-clear, healthy water without odor or residue.

Specifications

ASIN	B0002A5WQ0
Best Sellers Rank	673 in Pet Supplies ( See Top 100 in Pet Supplies ) 131 in Aquarium Gravel Cleaners
Brand Name	Seachem
Customer Reviews	4.8 4.8 out of 5 stars (37,499)
Global Trade Identification Number	00000116043908
Item Form	Liquid
Item Weight	0.45 Kilograms
Liquid Volume	4 Litres
Manufacturer	Seachem
Manufacturer Part Number	439
Model Number	67104390
Number of Items	1
Pet Type	Fish
Product Warranty	2 year manufacturer
Target Species	Fish
UPC	000116043908

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