Is this safe for bettas?

Yes! At the moment, my lonely Betta has been living in a heavily planted 40 gallon tank with some trumpet snails. I have been using only seachem products and they have not not affected him nor the snails, negatively. However use caution when dosing - follow directions. If tank isn’t heavily planted I would half the doses...

Can I use flourish potassium on hibiscus plants?

Would work on any plants I would think.

How many ml do i use for a 72 gal and a 75 gal tank?

10 ml per 60 gal. 2 - 3 times a week per the instructions.

Will it work on watermelons

This product is intended for aquarium use. I suppose it would work in a garden scenario, but is expensive by comparison to garden fertilizers (which are great for plants, but generally kill fish if you put them in an aquarium).

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Flourish Potassium 250 mL / 8.5 fl. oz.

Product ID: 5951852

Details

Brand
Seachem
Item Form
Liquid
Item Weight
8.8 ounces
Liquid Volume
250 ml
Unit Count
1 Count

⚡Boosts rapid plant growth

🌿Phosphate & nitrate free formula

💧50,000 mg/L potassium concentration

€ 28.27

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Description

🌿 Unlock lush growth with every drop — don’t let your plants miss out!

CLEAN GREEN - Formulated without phosphate or nitrate, ensuring pure, algae-free water clarity.
GROWTH GUARDIAN - Prevents potassium depletion in fast-growing planted tanks for sustained vibrancy.
POTASSIUM POWERHOUSE - Delivers a potent 50,000 mg/L potassium boost to supercharge your aquatic plants’ growth.
SEAMLESS INTEGRATION - Perfectly complements the entire Seachem Flourish line and Fluorite gravel for a holistic plant care system.
TRUSTED BY THOUSANDS - Backed by 3,100+ glowing reviews and a 4.8-star rating—join the thriving planted aquarium community.

Seachem Flourish Potassium is a high-concentration liquid supplement (50,000 mg/L) designed to prevent potassium depletion in freshwater planted aquariums. Free from phosphate and nitrate, it supports vigorous plant growth without promoting algae, integrates seamlessly with Seachem’s Flourish product line, and is highly rated by thousands of aquarium enthusiasts.

Specifications

ASIN	B0002A5WRY
Allergen Information	Yam Free
Best Sellers Rank	#12,719 in Pet Supplies ( See Top 100 in Pet Supplies ) #95 in Aquarium Water Treatments
Brand	Seachem
Brand Name	Seachem
Customer Reviews	4.8 out of 5 stars 3,106 Reviews
Global Trade Identification Number	00000116046602
Included Components	Seachem Flourish Potassium 250ml
Item Form	Liquid
Item Type Name	Seachem Flourish Potassium 250ml
Item Weight	8.8 ounces
Liquid Volume	250 ml
Manufacturer	Seachem Laboratories, Inc.
Manufacturer Part Number	466
Model Number	466
Number of Items	1
Pet Type	Fish
Target Species	Fish
UPC	015568977138 000116046602
Unit Count	1 Count
Warranty Description	Warranty

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TrustScore 4.5 | 7,300+ reviews

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€ 28.27

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered 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 Austria.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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