Thrive Root Tabs Fertilizer

(15 customer reviews)

Aquarium Thrive Root Tabs

Thrive Caps are premium root zone fertilizer capsules containing 60 aquarium root tabs

Thrive Caps is a substrate additive for planted aquarium

Thrive capsules contain Micro and macro elements as well as other minerals


New and improved Thrive Caps

New and Improved: Thrive Caps are a very similar product to the previous ThriveTabs, with a few improvements.  These aquarium root tabs require no additives to make them stick together, a feature that allows them to be smaller and more concentrated while still delivering similar nutrient levels.  In addition, contrary to ThriveTabs that caused clouding in some tanks, these new Thrive root tabs have an improved formula that manages to reduce the clouding effect.

Thrive Caps are nutrient-rich root tabs for aquarium plants designed to be placed in the substrate of a planted freshwater aquarium.  They will provide a long-lasting nutrient source essential for healthy plant growth.  Thrived Caps are a blend of dry Thrive mix, ironrich clay, and mineralized topsoil which makes them the best root tabs for aquarium plants.

Dosing Instructions

Place a capsule at the base of each plant or space out around the tank every 5-6″ in a grid pattern. Push down to the bottom of the substrate as far as you can. Replace every 3-4 months or as needed.

Guaranteed Analysis

Total Nitrogen(N) 2.57%
2.57% Water Soluble Nitrogen(N)
Available Phosphate(P2O5) 1.69%
Soluble Potash(K2O) 10.1%
Magnesium(Mg) 0.40%
0.40% Water Soluble Magnesium(Mg)
Sulfur(S) 0.31%
0.31% Combined Sulfur(S)
Boron(B) 0.014%
Cobalt(Co) 0.0006%
Copper(Cu) 0.0001%
0.0001% Water Soluble Copper(Cu)
Iron(Fe) 2.47%
2.47% Water Soluble Iron(Fe)
Manganese(Mn) 0.161%
0.161% Water Soluble Manganese(Mn)
Molybdenum(Mo) 0.00029%
Zinc(Zn) 0.0055%
0.0055 Water Soluble Zinc(Zn)
Nickel(Ni) 0.00035%

Potassium Nitrate, Potassium Phosphate, Potassium Sulfate, Magnesium Sulfate, Boric Acid, Iron DTPA, Iron EDTA, Ferrous Gluconate, Manganese Sulfate, Zinc Sulfate, Cobalt Sulfate, Sodium molybdate, Nickel Chloride, Iron Rich Clay, Mineralized Top Soil.

Information regarding the heavy metal content of this product can be found at Association of American Plant Food Control Officials

15 reviews for Thrive Root Tabs Fertilizer

  1. Doug P. (verified owner)

    Great product! Been using these for awhile and have great results. Also, great value compared to the competition..

  2. james wilson (verified owner)

    so far these are bar none my favorite tabs. other than a nitrate spike the first couple days they were in (corrected via water changes). that is obviously because my substrate wasn’t deep enough to hold all the nutrients in. now though they are making my crypts and swords explode and no issues with water quality.

  3. MelanieClaire (verified owner)

    Seriously. Only product, other than GlasGarten I allow in my tanks. Seriously. 40 years in the hobby.

  4. Robin (verified owner)

    My new plants were melting away, and rotting at the roots. I bought this and added it in, and now my plants are turning green again! Best. Stuff. Ever! And, you get excellent customer service to boot!

  5. Doug (verified owner)

    Have been using these for awhile now. Work really great,get nice growth. A good value ..

  6. James Hande (verified owner)

    I was using DIY root tabs with liquid ferts for about a year. My plants were just doing okay. I switched to these and in a matter of a week I noticed a big improvement. Greens got greener, my stem plants grew two inches and are looking good now. I’m regretting not using these from the beginning. Big waste of time going the DIY route. Thanks Colin for a great product!

  7. Son Huynh (verified owner)

    I used sand so there i snot much nutrient for my plants, so I decided give this a try. The result was night and day. Most of my plants are heavy root, so this root tab is really making my plants thrive faster. Take a picture of your plants and compared it in a month, you will see significant growth. Have not try the liquid one yet, but maybe the future i will give this a go.

  8. James Petrusczak (verified owner)

    Put tabs under some of my root feeder plants, and wow..they are really starting to change…for the better…new shoots everywhere.

  9. rod (verified owner)

    Been using these tabs for 2 1/2 months before submitting this review. I have inert substrate and initially did EI+ water column dosing with fairly good results although certain plants suffered and had some algae issues. I switched to Osmocote + root tabs with 1/2 EI and while plants had good growthl I soon had Black Beard and Hair algae. Switched entirely to NilocG tabs and stopped water column dosing and plants are doing great with minimal algae issues.

    Mind you I overloaded my tank using 42 tabs in a 40 breeder in one month and yet my algae issues have improved. Now just experimenting to determine the amount and frequency to sustain my tanks.

  10. Ryan (verified owner)

    I have used 3 different bottles of these all have worked well the only reason i didn’t give it 5 stars is the the old formula was easier to insert in the substrate and seemed to provide better growth

  11. Anonymous (verified owner)

    I was struggling with one of my tanks for over a year and couldn’t get a balance. Plants stayed stagnant after a myriad of different fert regimines and dosing schedules. Tried these tabs on a last ditch attempt prior to gutting the tank and starting over. Fantastic results. All my varied sword types, several types of crypts as well as a few other plants have shown absolutely phenomenal improvement.

    I chose to wait at least 45 days to review and wish I could show before and after photos as the result for this tank is incredible.

    I will be finishing up the last of a few other tabs from other brands in the tanks that don’t suffer to use them and going entirely to these. Unquestionably the best root tabs for a tank that I could not sort with any other methods. I look forward to trying them in all my other setups as well.

  12. Sondra (verified owner)

    I was using a different brand root tab but the plants just were not doing well. I started using these caps and the dying leaves I pulled off, but all of the new growth is doing well, staying green and actually growing. I have been using them for about a month. Was this over night, like many say? No. But over the weeks, yes. Money well spent and when the time comes I will definately order more.

  13. Melanie Claire Wiggins McMillan (verified owner)

    much better than ANY other brand I have tried. New growth on my Amazon sword, who fights my breeding rams…but new leaves w/in 48 hours.

  14. Brandon (verified owner)

    Saw new growth on plants within 24hrs

  15. Levi (verified owner)

    Just got these in the other day and put them in. Have them in my shrimp tank with some dwarf hair grass and wisteria. Excited to see how well it works. Been using NilocG fertilizers for a year now and they work fantastic.

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