FAQ

EST 1982

Welcome to the Aquassi Ltd Frequently Asked Questions page.

Here you’ll find expert answers to common questions about home aquariums, tropical fish care, marine tanks, aquascaping services, aquarium installation, maintenance, and UK delivery.

Whether you’re a beginner setting up your first aquarium or an experienced hobbyist planning a custom aquascape, our FAQ section is designed to provide clear, professional guidance.

Shop Q&A

What does Aquassi Ltd specialise in?

Aquassi Ltd specialises in premium home aquariums, tropical fish supply, professional aquascaping, marine tank setups, and custom aquarium installations across the UK.

Do you offer both freshwater and marine aquariums?

Yes. We provide freshwater tropical aquariums, planted aquascapes, colourful discus displays, and marine reef tank installations with advanced filtration systems.

Do you help beginners set up their first aquarium?

Absolutely. We provide step-by-step guidance on tank size selection, filtration, fish compatibility, water parameters, and long-term maintenance.

Do you offer custom aquarium installation?

Yes. Aquassi Ltd provides bespoke aquarium design and professional installation services for homes and commercial spaces across the UK.

What types of aquascaping do you specialise in?

We specialise in:

Nature-style planted aquascapes
Iwagumi minimalist layouts
Wooden hardscape aquascapes
Fern and low-maintenance planted tanks
Marine and reef systems

Do you offer aquarium maintenance?

Yes. We provide professional aquarium maintenance services including water testing, filtration checks, plant trimming, and system optimisation.

Do you offer fast UK delivery?

Yes. Aquassi Ltd provides fast and reliable UK delivery on aquarium supplies and livestock.

What if I need help after purchase?

Our customer support team is available to assist with setup guidance, troubleshooting, and ongoing aquarium care advice.

Are your tropical fish ethically sourced?

Yes. Aquassi Ltd prioritises healthy, ethically sourced tropical fish. All livestock is carefully selected and health-checked before sale.

Tropical Fish Q&A

What are tropical fish?

Cardinal Tetra
Betta
Guppy

Tropical fish are freshwater or saltwater species that thrive in warm water — typically 24–28°C (75–82°F). Popular freshwater tropical fish include Cardinal Tetras, Bettas, and Guppies.

Do tropical fish need a heater?

Yes. Most tropical fish require a stable, warm temperature, so a reliable aquarium heater is essential (especially in cooler climates).

How big should my tank be?

Nano fish (e.g., tetras, guppies): 10–20 gallons minimum
Betta (solo): 5 gallons minimum
Community tank: 20+ gallons recommended

Bigger tanks are often easier to maintain because water parameters stay more stable.

How often should I feed them?

Feed 1–2 times daily, only what they can eat in about 30–60 seconds. Overfeeding is one of the most common beginner mistakes.

How often should I change the water?

Weekly: 20–30% water change
Always use dechlorinator
Test for ammonia, nitrite, and nitrate regularly

Are tropical fish hard to keep?

Not necessarily! Hardy species like Guppies and some Tetras are beginner-friendly. The key is:

Proper tank cycling
Stable temperature
Regular maintenance

Marine Fish Q&A (Saltwater Aquarium Basics)

What are marine fish?

Marine fish are species that live in saltwater environments like oceans and coral reefs. In home aquariums, they require mixed saltwater with stable salinity.

Are marine tanks harder than freshwater?

Generally, yes. Saltwater tanks require:

Proper salinity (1.020–1.025 specific gravity)
Strong filtration
Protein skimmer (recommended)
Careful monitoring of parameters

But with research and patience, beginners can succeed.

What size tank should I start with?

Beginner-friendly saltwater tank: 20–40 gallons minimum
Larger tanks are more stable and forgiving

Nano reef tanks are possible — but require closer monitoring.

Do marine fish need special water?

Yes. You must:

Use marine salt mix (not table salt)
Use RO/DI water if possible
Check salinity with a refractometer

How often should I do water changes?

Typically 10–20% every 1–2 weeks, depending on stocking level and filtration.

What’s the easiest marine fish for beginners?

Common beginner choices:

Ocellaris Clownfish
Royal Gramma
Firefish

Avoid large, active species like Blue Tangs unless you have a large tank (75+ gallons).

Aquarium Tropical Plants Q&A

Do tropical aquarium plants need special lighting?

Most beginner plants do well under low to moderate LED lighting (8–10 hours daily).
High-light plants require stronger lighting and closer maintenance.

Do I need CO₂?

Not always.

Low-tech tanks: No CO₂ needed (Anubias, Java fern, Vallisneria).
High-tech tanks: CO₂ boosts faster growth and vibrant color.

Beginners can absolutely start without CO₂.

Do plants need fertilizer?

Yes — plants need nutrients like:

Nitrogen (N)
Phosphorus (P)
Potassium (K)
Iron

You can use:

Liquid fertilizers
Root tabs (for heavy root feeders like Amazon swords)

Can plants reduce algae?

Yes! Healthy plants compete with algae for nutrients.
More plant mass = less chance for algae outbreaks.

How do I plant them correctly?

Anubias & Java fern: Attach to wood/rocks (don’t bury rhizome).
Amazon sword & Vallisneria: Plant roots in substrate.

Are live plants hard to maintain?

Not if you:
✔️ Keep lighting consistent
✔️ Avoid overfeeding fish
✔️ Do weekly water changes
✔️ Trim regularly

Plants actually improve water quality and fish health.

Ready to Transform Your Space?

Let Aquassi design a stunning aquarium for your home or business.

FAQ