does this bottle have the measuring window on the side?

......no you use the cap which is a measured amount

I have high levels of nitrates and ammonia, is this what id use to sort the problem?

Be careful not to upset your tank by doing a half water change. This can be too stressful for some fish. Best do a 20-25% water change more frequently. I have found this to be less stressful and I have 3 tanks. Always treat the water too.

This product balances the water in your aquarium which in turns allows you to not change your water as often. It reduces the levels of phosphates , stabilises the pH and KH levels and restores essential trace elements and minerals

Is this supposed to leave a white residue on the gravel, please?

The product has greenish particles when you first put it in, but your filtration system should be movingly the water around the tank enough so that it doesn’t sit on the gravel after the first 24hrs

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Tetra EasyBalance - long-term care for biologically healthy aquarium water and a reduced number of water changes, 500 ml (Pack of 1)

Product ID: 47985111

Details

Brand
Tetra
Item form
Liquid
Item weight
350 Grams
Liquid volume
500
Unit count
500.0

⏳Extends water change intervals up to 6 months

💧Reduces water consumption by minimizing changes

⚖️Stabilizes pH & carbonate hardness (KH) reliably

₺2281

Duties & taxes included

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Description

💧 Keep your aquarium pristine and your schedule flexible — the future of fish care is here!

PRECISION STABILITY - Keeps pH and KH levels perfectly balanced for up to half a year.
SAFE FISH FRIENDLY - Contains harmless nitrate-reducing granules that even curious fish can’t resist.
BALANCED ECOSYSTEM BOOST - Infuses essential vitamins, trace elements, and minerals for thriving fish and plants.
EFFORTLESS AQUARIUM CARE - Say goodbye to monthly water changes and hello to more free time.
SUSTAINABLE ECO FRIENDLY - Cut down water usage while maintaining crystal-clear, healthy water.

Tetra EasyBalance is a 500ml liquid treatment designed to stabilize essential pH and carbonate hardness levels in aquariums, reducing harmful phosphates and nitrates. It extends the interval between partial water changes up to six months, significantly lowering water consumption. Enriched with vital vitamins, trace elements, and minerals, it promotes a healthy aquatic ecosystem, simplifying maintenance especially for soft water tanks. Trusted by thousands with a 4.6-star rating, it’s the smart, eco-conscious choice for long-term aquarium care.

Specifications

ASIN	B0034YOE74
Best Sellers Rank	3,213 in Pet Supplies ( See Top 100 in Pet Supplies ) 24 in Aquarium Water Treatments
Brand	Tetra
Brand Name	Tetra
Country Of Origin	Germany
Customer Reviews	4.6 out of 5 stars 1,647 Reviews
Global Trade Identification Number	04004218143067
Item Form	Liquid
Item Weight	350 Grams
Item form	Liquid
Item weight	350 Grams
Liquid Volume	500 Millilitres
Liquid volume	500 Millilitres
Manufacturer	Spectrum Brands
Manufacturer Part Number	T166
Model Number	T166
Number of Items	1
Pet Type	Fish
Target Species	Fish
Unit Count	500.0 millilitre
Unit count	500.0 millilitre

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