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

Seachem Flourish Gravel Bed Tablets, 10-Count

Product ID: 48995706

Details

Brand
Seachem
Item form
Tablets
Item weight
0.8 Ounces
Liquid volume
10 Gallons
Number of Packs
1

⏳Lasts 3-4 weeks per dose

⚡Targets root zone directly

🌱Micro & trace nutrient boost

₩39196

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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.
LONG LASTING GROWTH POWER - Each tablet supports vibrant plant health for up to a month, reducing maintenance frequency.
TRUSTED QUALITY FROM SEACHEM - Backed by a 2-year warranty and 4.6-star rating from nearly 6,000 aquatic enthusiasts.
OPTIMIZED FOR 10 GALLON TANKS - Perfectly dosed with 6 tablets for standard 10-gallon aquariums—no guesswork needed.

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 robust plant growth with a simple, low-maintenance dosing schedule of one tablet every 3-4 weeks. Trusted by thousands of aquarists and backed by a 2-year warranty, Flourish Tabs ensure your underwater garden thrives with minimal effort.

Specifications

ASIN	B000255QLG
Best Sellers Rank	3,039 in Pet Supplies ( See Top 100 in Pet Supplies ) 5 in Health Supplies for Fish & Aquatic Pets
Brand	Seachem
Brand Name	Seachem
Country Of Origin	USA
Customer Reviews	4.6 out of 5 stars 5,967 Reviews
Global Trade Identification Number	00000116050500
Included Components	aquarium plants
Item Form	Tablets
Item Type Name	growth stimulating tablets for plant roots
Item Weight	0.8 Ounces
Item form	Tablets
Item weight	0.8 Ounces
Liquid Volume	10 Gallons
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
Unit count	30.0 gram

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₩39196

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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1 month ago

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Perfect platform for hard-to-find items. Delivery was prompt.

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