Frequently Asked Questions
Quick answers about ordering, dimensions, aquarium use, care, delivery, and returns.
Last updated: September 28, 2026
Orders, Products & Aquarium Care
What does Belvynna sell?
Aquarium products for filtration, circulation, aeration, feeding, cleaning, lighting, aquascaping, and habitat maintenance.
How long does processing take?
Normally 2–4 business days and up to 5 business days during peak periods.
How long does U.S. delivery take?
Estimated transit after dispatch is generally 10–15 business days.
Will I receive tracking?
Tracking is sent to the checkout email when available and may take several business days to update.
Can I change or cancel an order?
Contact us immediately. Changes are not guaranteed after processing starts, and shipped orders cannot be canceled.
How do I choose the right size?
Measure the aquarium, cabinet, water volume, tubing route, available clearance, and outlet space, then compare them with the product-page specifications.
Will an aquarium product guarantee water quality or livestock health?
No. Results depend on tank cycling, water chemistry, temperature, stocking, feeding, maintenance, species compatibility, and user care. Products support a routine but cannot guarantee water quality, animal health, or survival.
Can every aquarium product be submerged?
No. Submerge only products specifically described as submersible and follow the marked water-level and installation instructions. Keep non-submersible electrical parts dry.
How should aquarium products be cleaned?
Follow the product instructions, unplug electrical equipment with dry hands, never immerse non-submersible components, and avoid household chemicals unless explicitly aquarium-safe.
How should tubing, nets, and cleaning accessories be dried?
Follow the product instructions, use aquarium-safe cleaning methods, rinse thoroughly where appropriate, and allow accessories to dry fully before storage or reuse.
How should filters, pumps, tubing, and lights be checked?
Inspect housings, seals, impellers, tubing, suction cups, brackets, cords, plugs, and lights before use. Replace cracked, leaking, overheated, or electrically damaged components.
What if aquarium equipment becomes damaged?
Disconnect and stop use immediately if damage could cause leakage, exposed wiring, overheating, electrical shock, unstable installation, or injury to aquatic life. Do not make unsupported electrical repairs.
What if my order is damaged or incorrect?
Contact us within 7 calendar days with the order number and clear photos.
What is the return window?
Eligible products may be requested for return within 30 calendar days after delivery.
Can used aquarium products be returned?
Change-of-mind items must generally be unused, unwashed, free of aquarium water, algae, substrate, livestock contact, medication, odors, mineral deposits, stains, moisture, or use wear, complete, and resalable. Hygiene restrictions may apply.
Is there a restocking fee?
No restocking fee is charged for approved eligible returns.
Who pays return shipping?
Customers generally pay for preference, size, color, or compatibility returns; verified defects or our error receive the applicable remedy.
When is a refund issued?
Approved refunds are initiated within 5–10 business days after inspection; banks may need additional posting time.
What should I keep after delivery?
Keep packaging, labels, instructions, tubing, suction cups, inserts, hardware, and accessories until inspection and any claim period are complete.
How do I contact support?
Email service@belvynna.com or call +8617773834777 with your order number.