Description
GLA Terra Root Fertilizer – Aquarium Substrate Capsules - Root Tabs
Slow-release root fertilizer capsules provide essential macronutrients (N, P, K, Mg, Ca) directly to the plant root zone for enhanced growth, development, and nutrient uptake. Nutrients remain localized in the substrate to reduce water column impact, leaching, and nutrient spikes.
Formulated without trace elements or copper, GLA Terra Root Fertilizer supports stable nutrient delivery while preventing trace overdosing. Ideal for use alongside liquid fertilizers for complete nutrient coverage in planted aquariums.
- Provides N, P, K, Mg, Ca for root development and growth
- No iron or trace elements – avoids accumulation and water column interference
- Copper-free – safe for shrimp and invertebrates
- 40 capsules per resealable pouch
Instructions:
Insert 1 capsule every 2–3 inches deep into substrate near plant roots. Use additional capsules for larger plants, heavy root feeders, or nutrient-depleted zones. Replenish every 2–3 months or as needed.
Use with GLA Nectar liquid fertilizers for complete spectrum nutrient support, above and below the substrate.
Customer Reviews
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Shrimp safe fertilizer tablets!
Finally a tablet I can fertilize my tank and not worry about my Taiwan Bee’s! Plants are happy
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Fabulous substrate fertilizer system from GLA
Only my second batch after 6 months. I wanted to see how the first bag went and I was blown away. Im now on my second bag. I used Niloc tabs before but I did not get much response to growth with my plants. With these you see it very quickly and it last quite a while.
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Worth their weight in gold!
My first bag of these were free with a prior purchase last year. I ran out last week and was happy to receive these so quickly. I dont have much time for daily dosing so most all my plants are fed with these now. One thing I noticed right away was the lack of alage in my tank since I started using these. I emailed GLA and they said the capsules did not remove the algae that perhaps the excelled plant growth helped stabilize my tank with the absence of water column dosing. I ordered 10 bags and I feel that will last me for years of dosing. I dont think I will ever dose the column ever again. These are the bees knees.
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Ive tried every substrate fertilizer on the market. None work like these.
Used them all, even DIY versions. Everything from easy-green tablets to niloc tablets and these puppies are like steroids for plants. I use mostly root tabs for my fertilizing because I travel a lot. I have been use to what all the competing tablets achieve upon my return home. Honestly, it makes for a great quality control test environment. Considering I have used all of them. Well, I came home from business and my plants were easily overgrowing one another. Im not sure of its the time release effect, or the nutrients inside. Either way the plants respond like no other.
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Good results from these fertilizer tablets.
So far the plants are doing very well. Growth is steady and no sign of deficiency. I also dose PPS-Pro so Im sure this factors in. All in all the combination of the two is a great bargain.
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My favorite aquarium root tab fertilizer.
I like the fact how many you get in the bag. This packet last me months and my plants are totally rockin. Most of my plants are stem plants followed by crypts ,Monte Carlo and a mix of mini hairgrass. My sword plants are happy, new leaves on the regular. These are great because I don’t have much time to dose everyday or every week for that matter. I use to dose my tank religiously, but not any more. I’m lucky to add micros once a month now.
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I love this aquarium substrate fertilizer tablet.
Very economical and are lasting a long time. I originally ordered these because I was leaving on business for a month. I was skeptical at first, Im not a skeptic any longer. When I returned home it was if my tank did not skip a beat besides the stupid amount of trimming I needed to do. The tank had zero algae and my plants looked better than when I was tending to them weekly. I now use these tablets in all my scapes.
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My plants love it!
Couldn't be happier! Thank you!
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Lovely addition to my PPS Pro dosing kit.
A few months ago I implemented these into a tank using PPS-Pro and the results have been terrific. I stopped dosing mid week just to see if I could get away with it. No issues with my inverts at all and my plants are totally happy. Really digging the 40 count pack!
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Perfect balance of nutrients
GLA substrate fertilizer capsules have the perfect balance of nutrients for the planted aquarium. There is no ammonia spikes, no contaminants, and no bs. I love these caps, and my tank is thriving thanks to them.
