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Seachem Flourite Black Clay Gravel – Stable Porous Natural Planted Aquarium Substrate 15.4 lbs

$14.40

$14.40

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  • GRAVEL: Seachem Flourite Black is a specially fracted stable porous clay gravel for the natural planted aquarium. Its appearance is best suited to planted aquaria, but may be used in any freshwater aquarium environment.
  • AQUARIUM BED: Gravel modifiers such as laterite are not necessary when using Seachem Flourite Black as this product is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels.
  • SET-UP: When adding water to the aquarium, fill slowly to avoid disturbing Flourite Black substrate bed. Place a bowl in the aquarium and add water directly to the bowl, allowing water to overflow softly on to the gravel bed. Initial cloudiness is normal, but to remove this simply use mechanical filtration
  • COMPATIBLE: Flourite Black substrates will work fine with an under gravel filter and will not soften or decompose to an unsuitable state within your tank.Flourite substrates will work fine with an UGF
  • SAFETY: Seachem Flourite Black is not chemically coated or treated, thus does not alter the pH of the water. Flourite Black is beneficial for the life of the aquarium and need not be replaced.

Specification: Seachem Flourite Black Clay Gravel – Stable Porous Natural Planted Aquarium Substrate 15.4 lbs

Item Weight

15.4 Pounds

Department

Unisex-Adult

Manufacturer

Seachem Laboratories, Inc.

Item model number

3725

Date First Available

May 15, 2008

Item Package Dimensions L x W x H

16.65 x 9.37 x 5.12 inches

Item Dimensions LxWxH

17 x 11.75 x 1.75 inches

Brand Name

Seachem

Target Audience Keyword

algae-eaters, mollusks, octopuses, snails, fish, Fish, rays

Model Name

Flourite Black 7kg

color

Red

size

15.4 lbs

material

Plastic

Age Range Description

All Life Stages

Number of Items

1

Style

Gravel

Specific Uses for Product

Indoor

5 reviews for Seachem Flourite Black Clay Gravel – Stable Porous Natural Planted Aquarium Substrate 15.4 lbs

4.8 out of 5
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  1. Green girl 87

    The media could not be loaded.

     Yes, probably best to wash it… but honestly not the end of the world if you don’t (unless you try adding it to an existing tank with no backup tank to put existing fish from that tank).

    It will take a couple of days for the dust to settle if you don’t rinse it. And if you stir it up again by moving things or planting, it will take a couple more. However, over time, the dust settles down beneath the rocks and is harder to disrupt.

    I didn’t wash mine on a new tank setup and it was barely cloudy for a few days. No fish went in right away so no problem. I think the dust is probably good for the plants since the smaller particles are easier to absorb than whole rocks.

    I got a second bag of the dark reddish flourite and put that into an existing tank and it got very cloudy, like a storm on Mars or something. Even that cleared up within about 36 hours. (I did have to relocate my fishes to other tanks though because I don’t want them choking on the dust)

    I used the flourite as well as fertilizing tabs by seachern, and my plants are very healthy and grow very fast, including a nice thick carpeting of monte carlo.

    In contrast with another tank I have without “plant supporting” substrate, the tanks with the flourite grow plants much faster (with same brand lighting, and no Co2, just liquid fertilizer from seachern.)

    I’d recommend a light rinsing if you’re in a hurry to get a tank setup, and definitely if you’re adding it to an existing tank.

    The color is awesome and looks very natural, which is rare for a black substrate. I’ve bought a couple different brands I threw out because they just looked unnatural in black (one was obviously painted :/ )

    So I really like this substrate and have already bought more. I think you’ll like it too as long as you’re prepared to let the dust settle over a few days. 😀

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  2. Richard

    Wow does this stuff look good. It’s definitely not the cheapest inert substrate out there, and WOW is it dirty when it comes in the bag, but its definitely the nicest inert substrate I know of.

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  3. dreamer_rt

    So when I first decided to get some of seachem’s flourite for my aquarium, I accidentally got the regular red/brown color instead of black. The bag had busted open in the box, so I was able to see what it looked like before returning. The flourite black is much finer particle size than regular. And quite finer that standard aquarium gravel. Idk how this will affect it being in the aquarium as substrate, but it did make it a pain to clean.

    So the directions on the bag suggest you rinse it. I would say rinsing it is a requirement. And because it is so fine, you’ll need a fine mesh strainer for this. Get yourself 2 buckets. Dump all your gravel in one. Use a strainer to rinse it in the sink and then dump the clean gravel in the other bucket. Time consuming? Yes. But the water that came out of the gravel when I did this was a murky grey/black color. I definitely would not want this in my aquarium. I don’t even want to imagine how many gravel vacs and water changes it would take to get out.

    Here is the detailed way I strained it. Once the water comes out clear from rinsing, I would shake/sift it around in the strainer. I discovered that a mess of tiny particles come out in the sink, see pics. So I would tip the strainer enough that I could use my hand and the water to get all those tiny particles off the bottom of the strainer. Be careful to not tip so much that your relatively larger sized gravel particles fall out of the top of the strainer. Then I sifted again and did this rinsing of the bottom of the strainer again. Like I said, it was time consuming. Also, if you don’t want some of these super tiny particles going down your drain, I suggest getting a fine mesh sink strainer. I know my sink is already a little slow draining and needs the trap underneath cleaned out. So I wasn’t terribly concerned about it.

    As far as quantity, I ordered three 15.4 lb bags. The first pic is how they look in a 55 gallon tank. I haven’t properly leveled it out yet, but it is approximately 2 inches total, with 1 inch being visible above the frame. I would actually like just a little more than this. But my plan is to mix some regular aquarium gravel in with it for a pop of color. Though this level of gravel is fine for this tank. It is just a personal preference. And I almost just ordered 2 bags, but I don’t think that would have been enough.

    Once I do add my colored gravel in and get it set up and going with my plants, I will update this review.

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  4. dreamer_rt

    After reading reviews and researching this product for weeks, it became clear to me that the single most important thing was not rinsing the living crap out of it, but to cure it under the sun. So I did exactly that, spending less than 15 minutes total rising my three bags and ending up with a fabulous, cloud free tank.

    I filled a 5 gallon bucket halfway and poured one of the bags into it. You can see from the photos that the resulting goo is not something you would EVER under ANY circumstance add to an exiting tank, or a new one for that matter! I poured that mess of a clay soup out and refilled the bucket halfway. I did that about 5 more times until the water was 90% clear. I repeated that process twice more for the other two bags then spread the Flourite out on a fitted sheet.

    I must point out here that had I wanted, I could have easily kept rinsing until the gravel was crystal clear, but I did not.

    Anyway, after about three hours under the sun, I emptied it into two buckets. The Flourite was bone dry and had a million tiny particles in it so it was a bit dusty. I poured about a gallon of water into each pail to keep the dust down then added it to the tank. I then filled it five gallons at a time, pouring the water onto one of the rocks in my tank. I immediately added my plants and despite all the rustling of the gravel to get them rooted, there was no cloud. Yay!

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  5. Pepperberryinn

    Good clay gravel-like substrate. Black looks good in my tank. Rinsed and soaked for a week, multiple rinses per day in bathtub with strainer. Natural looking. Live aquarium plants doing well. Fish doing great. Rinse it diligently and you an your fish will be happy. Get the big bag!

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    Seachem Flourite Black Clay Gravel – Stable Porous Natural Planted Aquarium Substrate 15.4 lbs
    Seachem Flourite Black Clay Gravel – Stable Porous Natural Planted Aquarium Substrate 15.4 lbs

    $14.40

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