How long can this root fertilizer last?

Generally, these spikes last for 2-3 months. However, the replacement frequency can vary depending on the plant type and aquarium conditions

If the substrate is shallow, less than 1.6 inches, how should I use it?

There are two methods: You can place it horizontally instead of vertically. Or you can trim it shorter and use it.

When should I start using this root fertilizer?

Generally, after aquatic plants have grown for a while, the nutrients in the soil begin to deplete and need replenishing. Alternatively, start using the fertilizer if you notice your plants becoming slightly yellow or wilted.

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FZONE Aquarium Root Fertilizer Spikes, 25 ct，NPK High-Concentration Easy Green Aquarium Fertilizer, Freshwater Aquarium Plant Fertilizer for Plant and Root Growth (25 Spikes Per Box)

Product ID: 603586640

Details

Brand
FZONE
Item Form
Sticks
Manufacturer
FZONE
Number of Items
1
Specific Uses For Product
Freshwater

⏳Slow-release formula lasts 2-3 months

🌿High NPK concentration for vibrant growth

🎯Targeted root zone nutrient delivery

Description

🌱 Unlock your aquarium’s lush potential with every spike!

PROBIOTIC POWER - Special probiotics enhance substrate nutrient breakdown for superior root uptake.
OPTIMIZED COVERAGE - 25 spikes treat a 60x40x40 cm tank, perfectly tailored for freshwater aquascapes.
ECO FRIENDLY FORMULA - Minimizes nutrient runoff to protect your aquarium’s delicate ecosystem.
SUSTAINED GROWTH BOOST - Slow-release spikes provide consistent feeding for up to 3 months—less hassle, more bloom.
PRECISION ROOT NUTRITION - Direct nutrient delivery to roots maximizes absorption and plant vitality.

FZONE Aquarium Root Fertilizer Spikes deliver a high-concentration NPK formula directly to aquatic plant roots via slow-release sticks, promoting vibrant growth and rich coloration. Designed for freshwater tanks, these 25 spikes provide targeted nutrition for up to 3 months while minimizing nutrient runoff, enhanced by probiotics that improve substrate nutrient absorption. Ideal for hobbyists seeking an easy, economical, and eco-conscious way to elevate their aquatic plant health.

Specifications

ASIN	B0CQ4K6YPP
Best Sellers Rank	#200,018 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,483 in Aquarium Water Treatments
Brand	FZONE
Coverage	Suitable for 10*10 cm² each spike
Customer Reviews	4.1 out of 5 stars 135 Reviews
Item Form	Sticks
Manufacturer	FZONE
Mixing Ratio	12:4:25
Model Number	RT01
Number of Items	1
Part Number	RT-01
Specific Uses For Product	Freshwater Aquarium Plants
Target Species	Aquatic Plants
Unit Count	1 Count
Warranty Description	1 Year Manufacturer

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