Can I put this in tank ,washed,with fish already in?

It is possible but it is really fine , I have a four foot aquarium and I do sometimes top up existing sand after a water change

How big is the gravel? 1mm?

They are very small pieces. One bag is only good for a small area.

How fine is this sand?

1 mm - very natural in colour with different hues unlike some white gravel/sand which looks bleached white and uniformed

Can you use this sand for garden under membrane

Not sure but it’s not really sand it’s more like grit. You could probably get builders sand for cheaper

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AMTRA White Quartz - Fine White Quartz Aquarium Sand, for Fresh or Salt Water, 0.1-0.7mm Grains, Quantity 5kg (Package may vary)

Product ID: 157419235

🌊Ultrafine 0.1-0.7 mm grain size

🎨Natural white sand for crystal clarity

⚖️5 kg premium weight

€ 25.85

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🏝️ Transform your tank into a serene underwater paradise

ULTRAFINE TEXTURE - Smooth 0.1-0.7 mm grains ensure a natural, elegant substrate that fish adore
PERFECT GRAIN GRADIENT - Create stunning depth with a 4cm front and 7cm back layering technique
CRYSTAL CLEAR AESTHETIC - Natural white sand enhances water clarity and highlights vibrant aquatic life
FAST RELIABLE DELIVERY - Get your aquarium upgrade quickly and hassle-free, join thousands of happy customers
FISH FRIENDLY ENVIRONMENT - Ideal for fresh and sea water tanks, loved by corys and guppies alike

SANDS by Amtra is a 5 kg pack of ultrafine natural white sand (0.1-0.7 mm grain size) designed for both fresh and sea water aquariums. Its carefully recommended layering creates a beautiful depth effect, enhancing the visual appeal of your tank while providing a soft, fish-friendly substrate. Highly rated for clarity, ease of cleaning, and fast delivery, it’s a top choice for aquarium enthusiasts seeking premium quality at an amazing value.

Specifications

ASIN	B00H3J2LUI
Allergen Information	Abalone
Batteries Included	No
Batteries required	No
Best Sellers Rank	11,797 in Pet Supplies ( See Top 100 in Pet Supplies ) 10 in Aquarium Sand
Colour	White
Customer Reviews	4.5 4.5 out of 5 stars (3,608)
Date First Available	19 Nov. 2015
EU Energy Efficiency Label	A+, B
Item Weight	5 kg
Item model number	A4022976
Number of Items	1
Pet Life Stage	Baby
Pet Type	Fish
Product Dimensions	25 x 4.5 x 34 cm; 5 kg
Quantity	1
Size	5 KG
Specific Uses	Active

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