Seachem

Seachem Flourish Freshwater Plant Supplement 500 ml

$10.52$11.39

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About this item

  • SUPPLEMENT: Seachem Flourish is a comprehensive plant supplement for the natural freshwater aquarium, containing a rich assortment of important micro elements, trace elements and other nutrients.
  • ELEMENTS: In order to benefit your aquatic plants and help your freshwater environment thrive, Seachem Flourish contains potassium, calcium, magnesium, iron, and other important elements.
  • WATER TREATMENT: For best results, use 1 capful (5 mL) of Flourish for each 250 L (60 US gallons) once or twice a week. For smaller doses, please note that each cap thread is approximately 1 mL. Refrigeration is recommended 3 months after opening.
  • SOLUTION COLOR: It is normal for the color of Seachem’s Flourish to vary by batch as the solution color is dependent on the temperature at which the product was blended. This variation in color is of no consequence to the function of Flourish.
  • SAFETY: Seachem Flourish is safe to use for invertebrates such as shrimp, but is designed to be used in conjunction with other macro and micro-nutrient supplements in aquariums only.
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Product details
BrandSeachem
Liquid Volume500 Milliliters
Item Weight1.2 Pounds
Item FormLiquid
ManufacturerSeachem Laboratories, Inc.
Technical specifications
item_weight1.2 Pounds
departmentUnisex-Adult
manufacturerSeachem Laboratories, Inc.
item_model_number67105130
date_first_availableJune 9, 2004
item_package_dimensions_l_x_w_x_h7.53 x 2.36 x 2.32 inches
item_dimensions_lxwxh7.7 x 2.1 x 1.6 inches
brand_nameSeachem
target_audience_keywordfish
directionsUse 1 capful (5 mL) for each 250 L (60 US gallons) of aquarium water once or twice a week. For smaller doses, cap thread is approximately mL. Refrigeration recommended 3 months after opening.
country_of_originUnited States
warranty_descriptionSee Manufacturers Website
model_name075231
colormulti
size500 ml
materialPlastic
age_range_descriptionall
number_of_items1
stylenon-toxic
included_componentsfertilizer
specific_uses_for_productActive
is_discontinued_by_manufacturerNo
product_dimensions7.7 x 2.1 x 1.6 inches; 1.2 Pounds
best_sellers_rank#3,868 in Pet Supplies ( See Top 100 in Pet Supplies ) #21 in Aquarium Water Treatments

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Customer reviews

4.65,568 ratings
  1. 583%
  2. 417%
  3. 30%
  4. 20%
  5. 10%

Customers say

Customers report that the plant supplement works well as a fertilizer, with their plants thriving and showing significant growth.

★★★★★

Great aquarium supplement

TamaraDecember 21, 2025✓ Verified purchase

I was struggling to keep my aquarium plants alive so I started looking for supplements that could help. I read a lot of reviews that said this product was extremely helpful in keeping plants alive so I decided to give it a try and I was extremely pleased with the progress of my plants. My plants have been flourishing since I started using this and id recommend it if you think your plants need some added support. Read more

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★★★★★

Highly Recommended – Plants and Fish Thrive!

Saul MartinezFebruary 16, 2025✓ Verified purchase

I’ve used Seachem Flourish Freshwater Plant Supplement (500ml) before, and it’s always my go-to. A local store with beautiful plants and a great quarantine process for fish highly recommended it, and I can see why. Pros: - Keeps plants thriving and continuously growing. - Works for all types of aquatic plants - Doesn’t require large doses depending on tank size Cons: - Needs to be refrigerated Since using this, my tank has become even more beautiful—lush, green, and full of life. My fish thrive in a well-planted environment with plenty of hiding spaces, making them more active and comfortable. I also have a separate tank for growing plants, which I sell to a store while quarantining fish before adding them to my main tank. This supplement has been essential in keeping both my plants and fish healthy. Would I buy it again? Absolutely. Read more

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★★★★★

Does What It's Supposed To

ryrossFebruary 25, 2025✓ Verified purchase

This fertilizer is pretty much what you'd expect from a plant supplement - it adds nutrients to your tank so your plants can thrive. The instructions are straightforward enough, though I did have some trouble figuring out which cap thread was which at first (I guess they all look the same when you're tired). Anyway, I followed the recommended dosage and my plants seem to be doing well. One thing I noticed is that it makes the water a bit cloudy initially, but that cleared up after a few hours. Not sure if that's normal or not, but it didn't cause any issues (kind of like when I spilled coffee on my keyboard once - everything still worked fine). All in all, Flourish is a solid choice for keeping your plants healthy and happy. It's easy to use and does its job well, so no complaints here. Read more

★★★★☆

I guess it's working?

Allison P. WendellJanuary 26, 2023✓ Verified purchase

I have a 3 Gallon Aquarium for Blu my Betta. He has a few tank mates, a snail and aquatic frog. I decided to switch out the fake decor and make his environment more like he would have in the wild. So my black thumb self decided to add live plants to his aquarium. I know more than I did when I started and when I set up my 10 gallon I will use different substrate. I used gravel which has no nutrients for your plants to thrive in. I didn't know this. I don't overfeed my fish so they weren't getting much nutrients from that. So yes, they were not looking the healthiest. At the advice I obtained from FB groups I belong to, I started to treat with Flourish and CO2 boost, both bought here on Amazon. My plants have been looking healthier! I bought some frog bit and other plants from a seller here on Amazon and the plants arrived dead. Only a few (very very few) survived but were not in the best shape. This morning I'm seeing baby frog bits. yay. And some seeds I had planted which weren't growing have started to sprout! So I'm guessing this treatment is having a good effect on my plants. I recommend. Read more

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★★★★★

Amazing for live plant aquariums

J AkesJuly 21, 2019✓ Verified purchase

Am new to aquariums and learning as I go. Have had my tank for about 3 months now and found advice on how to set it up and keep it healthy very varying depending on whom you were talking to. But after getting my tank set up with water wanted to dress it up a bit before purchasing my fish to start the cycling. Thought live plants would be a great addition and also create a more true bio-system for my aquatic pets once they arrived. But my plants weren't doing well after the first week and found this online in several bulletin boards as the item to get to help them get the nutrients they needed without harming animals I put in my tank. I have a 29 gallon tall tank purchased from a local box store, it came with everything I needed for a basic starting point to improve as I could afford to. I purchased 7 plants one of which died before ordering this product. My levels were out of whack, I check them once a week and as needed to keep track of what worked and what doesn't for me personally. But after using this product for one week noticed new growth, after two weeks the plants that were stressed and turning yellow in color have greened back up. Since have added 5 red eyed tetras and 3 albino cory cats to the tank and everyone is doing well. My numbers are safely within perimeters and it is beginning to look more and more like the tank of my dreams. I did develop a minor issue with black mold but did a total black out for 48 hours and added 5 mystery snails to clean what I missed after physically removing all I could. I also found this locally since then and plan on continuing to use it in future tanks and my current one. Has proven safe for all creatures in my aquarium, makes my plants look and grow very well. Would recommend this to any novice aquarium keeper for a safe and easy solution. I add 1/2 a capful twice a week to my tank near my water filtration outlet to keep it in the water without overdosing the water. From everything I read it stays in the water for 24 hours. I only feed my fish every other day to minimize overfeeding and so far am loving my aquarium and regretting not trying this sooner. My previous experiences with having an aquarium have not done as well as this one. Am glad I kept trying and trusted in quality products to help me overcome any issues that have arisen. Read more

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★★★★★

The BEST aquatic plant juice!!

Kelsey GibsonJanuary 18, 2026✓ Verified purchase

After just two weeks of use in my 20gal tank (just 1ml per week), my plants went from sad and brown to bright and vibrant green! I even have new sprouts coming up all throughout the tank. You can see in my before and after photo how much of a difference this made in just two weeks. I will definitely continue using this product and highly recommend to anyone struggling with their planted tank. Read more

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