Plant guide9 min
Amazon sword care guide
Root feeding, space, leaf turnover and long-term care for large rosette plants.
amazon swordroot feederrosette
AquaNexus knowledge library
Plants and plant care
Plant entries, lighting, nutrients, propagation and planted-tank troubleshooting.
28 complete guidesOriginal AquaNexus writingReviewed 2026-07-20
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Plant guide8 min
Anubias care guide
Slow-growing rhizome plant care, placement, propagation and algae control.
anubiasrhizomelow light
Plant guide10 min
Aquarium plant care basics
Balance light, nutrients, carbon and maintenance without chasing quick fixes.
plantslightingfertiliser
Plant guide11 min
Aquarium plant nutrient deficiencies
Use patterns, recent changes and controlled testing instead of guessing from one leaf.
plant deficiencynutrientstroubleshooting
Do aquarium plants need added CO2?
Decide whether injected carbon dioxide is necessary for the chosen plants and goals.
Read guide →Aquarium plantsDo aquarium plants need fertiliser?
Supply nutrients according to plant growth, light and substrate without feeding algae blindly.
Read guide →Practical guide9 min
How do I control black beard algae?
Reduce black beard algae by stabilising light, carbon availability, flow and organic maintenance rather than chasing one nutrient number.
black beard algaeBBAplant growth
Practical guide9 min
How do I control staghorn algae?
Treat staghorn algae as a sign of unstable plant growth, organic load or flow and correct the system while removing affected material.
staghorn algaeflowCO2
Practical guide6 min
How do I prevent planted-aquarium substrate compaction?
How to manage dense planted-aquarium substrate without dangerous deep stirring, unstable hardscape or unnecessary complete tear-downs.
substrateplanted aquariumrootsmaintenance
Practical guide8 min
How do I remove green spot algae?
Scrape hard surfaces safely and improve the balance of light, plant nutrition and maintenance so new spots form more slowly.
green spot algaeglass algaelighting
Plant guide8 min
Java fern care guide
Rhizome placement, leaf propagation, lighting and common Java fern problems.
java fernrhizomepropagation
Plant guide8 min
Java moss care guide
Attachment, trimming, debris control and propagation for Java moss.
java mossmossshrimp
Practical guide9 min
Should I use root tabs or liquid aquarium fertiliser?
Use root fertiliser for heavy root feeders and water-column fertiliser for species that absorb mainly through leaves and stems; many planted tanks need both.
root tabsliquid fertiliserplant nutrients
Plant guide8 min
Vallisneria care guide
Runner control, planting depth, leaf management and background growth.
vallisneriarunnersbackground plant
What aquarium plants grow in low light?
Choose genuinely tolerant plants and set realistic growth expectations.
Read guide →Practical guide10 min
What is blue-green slime in an aquarium?
Blue-green slime is usually cyanobacterial growth, not a true alga; remove it safely and correct low flow, excess organic matter and imbalance.
cyanobacteriablue green slimebiosecurity
Practical guide6 min
Why are aquarium plant leaves curling or growing stunted?
A pattern-based way to investigate curled, twisted or unusually small new aquarium plant leaves without blindly dosing every nutrient.
plant growthleaf curlingstuntingnutrients
Practical guide9 min
Why are aquarium plant leaves turning transparent?
Transparent leaves usually indicate tissue damage, melt, nutrient shortage or unsuitable growth conditions; judge new growth and the affected plant type.
transparent leavesplant meltnutrients
Why are aquarium plant leaves turning yellow?
Diagnose older-leaf versus new-leaf yellowing, light and nutrient limitations.
Read guide →Practical guide6 min
Why are aquarium stem plants rotting at the substrate?
A cause-by-cause guide to stem plants that blacken, soften or break exactly where they enter the substrate.
stem plantsplant rotsubstrateplanted aquarium
Practical guide8 min
Why are my floating aquarium plants dying?
Check wet leaves, strong surface flow, nutrient shortage, heat, condensation and light before assuming the species cannot grow.
floating plantssurface flownutrients
Why are new aquarium plants melting?
Distinguish normal transition from poor planting, damage or unsuitable conditions.
Read guide →Practical guide6 min
Why are red aquarium plants turning green?
Why red aquarium plants may become greener, and how to improve colour without starving plants or destabilising the aquarium.
red plantsplant colourlightingfertiliser
Practical guide6 min
Why are stem plants losing their lower leaves?
A lower-leaf troubleshooting guide for stem plants that look healthy at the top but become bare near the substrate.
stem plantslower leavesshadingplant growth
Practical guide9 min
Why did algae appear after I increased aquarium lighting?
More light raises biological demand; if plants cannot use it because nutrients, carbon or plant mass are limited, algae can respond first.
lightingalgaeplant balance
Why do aquarium plants develop holes in their leaves?
Distinguish nutrient deficiency from grazing and physical damage.
Read guide →Practical guide6 min
Why is the rhizome on Anubias or Java fern rotting?
How to recognise rhizome rot in Anubias and Java fern, remove dead tissue and reattach viable sections without burying the rhizome again.
AnubiasJava fernrhizome rotaquarium plants
Practical guide6 min
Why will my aquarium plants not stay rooted?
A practical way to stop newly planted aquarium plants floating up by correcting planting method, substrate support, flow and livestock disturbance.
aquarium plantsrootingsubstrateplanting
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