Can these be planted with a tank full of water as after thought?

Yes can be planted anytime, just push them into the gravel near the plants

They are pushed into the substrate at the roots of your aquatic plants. For dosage read the pack.

Will they work in my 17 L heavily planted Guppy baby nursery tank? It has no substrate other than java moss, stem plants & a banana plant.

I would have thought so, yes..I have a gravel bed & push one every 4 months under each plant base & they’re doing wonderfully well, I have lush healthy & thick foliage since using these tabs. I cannot say for sure as you have no substrate but I’d say give it a go. These tabs totally change the water ph though & I no longer have to battle with algae overgrowth which is another plus but be sure to change your water regularly as in my case my Angel fish’s eye went white but as long as I change the water every week he stays just fine.

Does the tab dissolve in water eventually? Or do I need to take the old tab out every 3-4 months?

You leave it in.. the plants will use it up.

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Seachem Flourish Gravel Bed Tablets, 10-Count

Product ID: 48995706

Details

Brand
Seachem
Item form
Tablets
Item weight
20 g
Liquid volume
10 Gallons
Number of Packs
1

⏳Lasts 3-4 weeks per dose

⚡Targets root zone directly

🌱Micro & trace nutrient boost

R$277

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Description

🌿 Root your aquarium in success with Seachem Flourish Tabs!

EFFORTLESS AQUARIUM CARE - Simply insert tablets every 10-15 cm for consistent, hassle-free plant growth.
PRECISION ROOT NUTRITION - Delivers essential micro and trace elements exactly where your plants need them most.
TRUSTED QUALITY FROM USA - Backed by Seachem’s 2-year warranty and a 4.6-star rating from thousands of aquatic plant enthusiasts.
LONG LASTING GROWTH SUPPORT - Each tablet nourishes your planted tank for up to a month, reducing maintenance frequency.
OPTIMIZED FOR 10 GALLON TANKS - Perfectly dosed with 6 tablets for standard 10-gallon aquariums, ensuring balanced nutrient distribution.

Seachem Flourish Gravel Bed Tablets are a scientifically formulated nutrient supplement designed to deliver essential micro and trace elements directly to the root zone of aquatic plants. Ideal for planted aquariums up to 10 gallons, these tablets promote vibrant, healthy growth with minimal effort, lasting 3-4 weeks per application. Trusted by thousands and made in the USA, they offer a reliable, easy-to-use solution for professional-grade aquarium plant care.

Specifications

ASIN	B000255QLG
Best Sellers Rank	3,152 in Pet Supplies ( See Top 100 in Pet Supplies ) 5 in Health Supplies for Fish & Aquatic Pets
Brand Name	Seachem
Country Of Origin	USA
Customer Reviews	4.6 4.6 out of 5 stars (5,974)
Global Trade Identification Number	00000116050500
Included Components	aquarium plants
Item Form	Tablets
Item Type Name	growth stimulating tablets for plant roots
Item Weight	20 g
Liquid Volume	10 Gallons
Manufacturer	Seachem
Manufacturer Part Number	075230
Model Number	67105050
Number of Items	1
Number of Packs	1
Pet Type	Fish
Product Warranty	2 years
Target Species	Aquatic Plants
UPC	781163244851 000116050500 074994343887
Unit Count	30.0 gram

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R$277

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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