Fluorite Red 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 aquarium environment. Fluorite Red is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels. Gravel modifiers such as laterite are not necessary and unlike competing products, fluorite Red never has to be replaced. It remains effective for the life of the aquarium. Fluorite Red is not chemically coated or Treated and will not alter the pH of the water. Is Discontinued By Manufacturer : No Product Dimensions : 17 x 11.75 x 1.75 inches; 15.4 Pounds Item model number : 3715 Date First Available : October 2, 2001 Manufacturer : Seachem Laboratories, Inc. ASIN : B000256DFY Best Sellers Rank: #74,737 in Pet Supplies (See Top 100 in Pet Supplies) #118 in Aquarium Gravel Customer Reviews: 4.4 4.4 out of 5 stars (1,093) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
The premium substrate for the Planted Aquarium 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 Aquarium environment The Package Weight Of The Product Is 15.43 Pounds
Price: $34.16 (as of Mar 23, 2026 13:01:56 UTC – Details)
Write an article in English about: Flourite Red, 7 kg / 15.4 lbs
10 reviews for Flourite Red, 7 kg / 15.4 lbs
Christopher Lang –
It looks great, but it’s FILTHY
I’ve tried most of the Flourite varieties in a handful of different setups. Most recently I’ve re-scaped my 55-gallon planted tank and used 3 different Fluorite colors. I laid a base layer of Flourite Dark and then topped it with a two-tone of Flourite Black Sand and this Flourite Red. I think it’s a really attractive and eye-catching contrast between both the color and granule sizes. Flourite Red is a burgundy red fracted clay gravel. The granule size is not consistent like a sand; it’s very irregular but visually interesting. The red coloration is very natural appearing, exactly like a red clay that it’s made from. It’s similar to a red clay pot and appears much brighter under high light (obviously).One word of caution if you plan on using this, or any Flourite product, is that it absolutely, positively must be rinsed thoroughly unless you want your aquarium to look like a glass box of dirt. The bag claims it’s pre-rinsed, and I’m sure it was once, but during transit all those pieces of clay knock around against each other and create a nice layer of dust inside the bag. The easiest way I’ve found to deal with this is to rinse it a pound or so at a time through a fine mesh sieve or colander. Some people rinse it in a bucket, which I’ve also done, but my experience there is that the ‘muck’ just settles to the bottom of the bucket rather than being washed away. When it comes to filling the tank afterward, add water slowly and pour over a bowl, plate, or rocks/wood/decorations in your tank to avoid kicking up any unwashed sediment.In terms of performance, it seems to work as well as any of the other Fluorite substrates I’ve used. My plants root in it easily and after an adjustment period of a few weeks they’ll start sending runners/leaves/propagate. I’ve never run any high-tech setups but I do dose Green Leaf Aquariums micro and macro nutrients daily and use glutaraldehyde (Flourish) on a semi-weekly schedule. My plants seem happy and Flourite seems as though it’s a healthy compromise between plain sand and a dirt substrate (which seems messy and problem-prone, but an overall superior solution).
Nicole H. –
Great product after LOTS of rinsing
Okay, so the first thing to know about this (or probably any) fluorite is that when the directions say to rinse it they don’t just mean a quick going-over under the faucet. Or even a half hour of rinsing under the faucet. I spent about a half hour rinsing this in a large strainer over a bucket and I thought it was good to go, but when I put it in the tank it left red sediment EVERYWHERE. The filter cleared it up after a day or 2, but there was still red sediment left sitting all over my plants, the tank walls, etc. & anytime the fluorite would get disturbed even a little bit it would release a mushroom cloud of red sediment that would darken the entire tank again. I got tired of this so I decided to start over. I removed the fluorite, cleaned the tank, rinsed my plants, and began rinsing the fluorite one cup at a time. I would rinse while turning/stirring it until the water ran clear. This took me about an hour or more. The fluorite looks noticeably different now – you can see color variation in the rock. There is zero sediment or cloudiness in the tank & everything looks great! I can dig down into the fluorite and it does not release any sort or cloudiness into the water anymore! I’m super happy about this product. I know some people argue that leaving the sediment there & letting it settle is the way to go b/c the sediment has beneficial nutrients yadda, yadda, yadda, but in my opinion it isn’t worth the trade off for a tank that always looks nasty. Thoroughly rinsed fluorite still has plenty of benefits & it looks amazing too!
JPNH –
Great substrate but be prepared to rinse for days…
I have this in my already established aquarium and am setting up a new one so bought more. The color is great and the plants love it. However, I forgot how terrible it is to rinse this. I could have provided water to a small village or a hundred camels with the amount of water you have to use to rinse this and even then the water is cloudy. I rinsed and thought I was good only to put it in my tank and add water and just have total instant cloudy water. Took all 30 something gallons of water out, removed gravel, and rinsed again…still have cloudy water but it is what it is and hopefully it will settle after a couple of days.
Adrian –
Good looking substrate. rinse, rinse, rinse!
Very dusty, but with enough rinsing it’ll look nice and natural. its also not going to affect your water parameters at all, definitely recommend
Jacob –
I do not recommend washing it all at once in the bag
This stuff takes a TON of washing. I do not recommend washing it all at once in the bag. Instead, take a strainer with small holes and rinse about 1/5th of the bag at a time. It requires a good deal of patience, but the results are well worth it.This stuff is very porous and large grain (large chunks of gravel), so it supports bacteria very well. The tank in which I used Flourite Red cycled twice as fast as another tank that I set up around the same time (the other tank used CarribSea Eco Black).The red colors is what really is the best about this product: very beautiful shades with great contrast. Not only does the substrate have good contrast with itself, but also with the greens of plants and it matches/accents the browns of driftwood. This is the perfect media for a natural tank.Something to note is that this should NOT be used with carpeting plants without a supplemental top layer of sand or anything the carpeting plants can grasp and reliably spread on. A previously established mat would also work well.
007 –
Looks beautiful in my tank. My only complaint is that it takes a long time to wash the dust out. I would buy it again anyway.
Vivienne –
great value and product
Manuel Villasuso –
Producto ejemplar
egidio –
Veramente bella
rekha –
Substrate is great for plants but not recommended for carpet plants. Once it is rinsed properly, there will be no cloudiness. Red colour is great too and suits perfectly for my tank.
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Christopher Lang –
It looks great, but it’s FILTHY
I’ve tried most of the Flourite varieties in a handful of different setups. Most recently I’ve re-scaped my 55-gallon planted tank and used 3 different Fluorite colors. I laid a base layer of Flourite Dark and then topped it with a two-tone of Flourite Black Sand and this Flourite Red. I think it’s a really attractive and eye-catching contrast between both the color and granule sizes. Flourite Red is a burgundy red fracted clay gravel. The granule size is not consistent like a sand; it’s very irregular but visually interesting. The red coloration is very natural appearing, exactly like a red clay that it’s made from. It’s similar to a red clay pot and appears much brighter under high light (obviously).One word of caution if you plan on using this, or any Flourite product, is that it absolutely, positively must be rinsed thoroughly unless you want your aquarium to look like a glass box of dirt. The bag claims it’s pre-rinsed, and I’m sure it was once, but during transit all those pieces of clay knock around against each other and create a nice layer of dust inside the bag. The easiest way I’ve found to deal with this is to rinse it a pound or so at a time through a fine mesh sieve or colander. Some people rinse it in a bucket, which I’ve also done, but my experience there is that the ‘muck’ just settles to the bottom of the bucket rather than being washed away. When it comes to filling the tank afterward, add water slowly and pour over a bowl, plate, or rocks/wood/decorations in your tank to avoid kicking up any unwashed sediment.In terms of performance, it seems to work as well as any of the other Fluorite substrates I’ve used. My plants root in it easily and after an adjustment period of a few weeks they’ll start sending runners/leaves/propagate. I’ve never run any high-tech setups but I do dose Green Leaf Aquariums micro and macro nutrients daily and use glutaraldehyde (Flourish) on a semi-weekly schedule. My plants seem happy and Flourite seems as though it’s a healthy compromise between plain sand and a dirt substrate (which seems messy and problem-prone, but an overall superior solution).
Nicole H. –
Great product after LOTS of rinsing
Okay, so the first thing to know about this (or probably any) fluorite is that when the directions say to rinse it they don’t just mean a quick going-over under the faucet. Or even a half hour of rinsing under the faucet. I spent about a half hour rinsing this in a large strainer over a bucket and I thought it was good to go, but when I put it in the tank it left red sediment EVERYWHERE. The filter cleared it up after a day or 2, but there was still red sediment left sitting all over my plants, the tank walls, etc. & anytime the fluorite would get disturbed even a little bit it would release a mushroom cloud of red sediment that would darken the entire tank again. I got tired of this so I decided to start over. I removed the fluorite, cleaned the tank, rinsed my plants, and began rinsing the fluorite one cup at a time. I would rinse while turning/stirring it until the water ran clear. This took me about an hour or more. The fluorite looks noticeably different now – you can see color variation in the rock. There is zero sediment or cloudiness in the tank & everything looks great! I can dig down into the fluorite and it does not release any sort or cloudiness into the water anymore! I’m super happy about this product. I know some people argue that leaving the sediment there & letting it settle is the way to go b/c the sediment has beneficial nutrients yadda, yadda, yadda, but in my opinion it isn’t worth the trade off for a tank that always looks nasty. Thoroughly rinsed fluorite still has plenty of benefits & it looks amazing too!
JPNH –
Great substrate but be prepared to rinse for days…
I have this in my already established aquarium and am setting up a new one so bought more. The color is great and the plants love it. However, I forgot how terrible it is to rinse this. I could have provided water to a small village or a hundred camels with the amount of water you have to use to rinse this and even then the water is cloudy. I rinsed and thought I was good only to put it in my tank and add water and just have total instant cloudy water. Took all 30 something gallons of water out, removed gravel, and rinsed again…still have cloudy water but it is what it is and hopefully it will settle after a couple of days.
Adrian –
Good looking substrate. rinse, rinse, rinse!
Very dusty, but with enough rinsing it’ll look nice and natural. its also not going to affect your water parameters at all, definitely recommend
Jacob –
I do not recommend washing it all at once in the bag
This stuff takes a TON of washing. I do not recommend washing it all at once in the bag. Instead, take a strainer with small holes and rinse about 1/5th of the bag at a time. It requires a good deal of patience, but the results are well worth it.This stuff is very porous and large grain (large chunks of gravel), so it supports bacteria very well. The tank in which I used Flourite Red cycled twice as fast as another tank that I set up around the same time (the other tank used CarribSea Eco Black).The red colors is what really is the best about this product: very beautiful shades with great contrast. Not only does the substrate have good contrast with itself, but also with the greens of plants and it matches/accents the browns of driftwood. This is the perfect media for a natural tank.Something to note is that this should NOT be used with carpeting plants without a supplemental top layer of sand or anything the carpeting plants can grasp and reliably spread on. A previously established mat would also work well.
007 –
Looks beautiful in my tank. My only complaint is that it takes a long time to wash the dust out. I would buy it again anyway.
Vivienne –
great value and product
Manuel Villasuso –
Producto ejemplar
egidio –
Veramente bella
rekha –
Substrate is great for plants but not recommended for carpet plants. Once it is rinsed properly, there will be no cloudiness. Red colour is great too and suits perfectly for my tank.