E-commerce · Pet Supplies
An aquarium keeper checks the tank size, the water type and the filter before buying anything.
An aquarium is a small closed ecosystem, and its keeper knows how fast it can go wrong. They buy a filter for a particular tank volume, a heater for a particular water temperature and a conditioner for a particular problem. Hobbyists also read forums and groups, and trust the people there more than a listing.
A 90-minute audit call and a written, scored report. Turnaround, reporting and term are agreed in writing after the audit.
In one paragraph
Fish and aquarium supplies e-commerce is the online sale of tanks, filters, heaters, lights, fish food, water treatments, gravel and decor to people keeping freshwater and marine aquariums. GullySales works on matching products to tank size and water type, on the hobbyist detail these buyers weigh and on the reorder of food and consumables.
Last updated 7 Oct 2026.
Who it is for
This is written for you if you sell fish & aquarium supplies online.
- Sellers of aquariums, stands and hoods
- Brands of filters, pumps, heaters and lighting
- Sellers of fish food, water conditioners and test kits
- Shops that sell plants, gravel, rocks and decor to hobbyists
Not for
It is not the right fit if.
- A seller who wants to ship live fish or plants without a plan for delivery and the rules
- A brand that guarantees water treatments solve a problem it has not diagnosed
How buyers choose
What decides the sale of fish & aquarium supplies.
Tank volume decides the equipment
A filter, heater and light are sized to litres. Buyers compare the rated volume with the tank and read reviews from owners of the same size.
Freshwater or marine
Marine tanks need different salt, lighting and equipment. A page should not mix them, and buyers filter by their own tank type.
Food for the species
Flakes, pellets, frozen and live foods, chosen for goldfish, tropical fish, cichlids or bottom feeders. Buyers read ingredients and pellet size.
Test kits and water treatment
Keepers who see a problem search by symptom, such as cloudy water or algae, and look for the product that says what it treats and how to dose.
Where sales are lost
What usually goes wrong when you sell fish & aquarium supplies online.
In the words sellers use on the first call.
“The filter was too small for the tank and came back”
A buyer read the price and not the rated volume, and the listing did not ask for the tank size.
“Glass tanks break in transit”
Breakage claims eat the margin on tanks, and a listing that does not show packaging invites doubt.
“Hobbyists buy where the forum tells them to”
A recommendation in a group beats any advertisement, and an online seller who is absent from these groups misses it.
The scope
The work we would propose for fish & aquarium supplies.
Measured on purchases, conversion rate, cost to win a customer, average order value and repeat purchases. Anything here that needs a platform or tool we have not used with you is confirmed in the audit before it goes in the scope.
- Tank-size matching on listingsA line on each filter, heater and light for the tank volume it suits, and a small picker that asks for litres.
- Packaging and delivery detail for tanksPhotographs of how a tank is packed, and what the buyer should check on delivery and report.
- Problem-based pagesPages for cloudy water, algae and a new tank setup, each explaining the cause and linking to the products that help.
- Hobbyist communitiesAnswers and posts in aquarium groups from someone who knows the hobby, with no hard selling.
- Reorder reminders for food and consumablesA message ahead of the date food and filter media run out, with tank-size-specific suggestions.
What we do
What you get for fish & aquarium supplies.
Each deliverable and what it is there to change.
A tank-size equipment chart
Filters, heaters and lights listed by the tank volume they suit, in one table.
A new tank starter guide
The items a first-time keeper needs, in order, with the steps for cycling the tank, linked to products.
A packaging page for tanks
What the box looks like, how a tank is protected and what to do if it arrives damaged.
A feed guide by fish type
Food types and pellet sizes for common fish, with advice on feeding amounts.
How the result is measured
- Purchases
- Conversion rate
- Average order value
- Repeat purchase rate
- Return rate
- Breakage and wrong-size claims
Recorded as a baseline before work starts, so every later report has an honest comparison.
How it works
From your first message to the first report.
No open-ended retainer. Every step gives you something in writing.
First
Free audit call
90 minutes with whoever handles your enquiries: how they arrive, how fast they are answered, where they are lost.
After the call
Written, scored report
Six areas scored, fixes ranked by return and cost. If you want our help, the scope, the fee and the reporting come with it, in writing.
Before work starts
Baseline recorded
Enquiries by source, reply time, conversion and cost per order, written down so every later report has an honest comparison.
After the baseline
The first fix goes live
Usually the cheapest one on the report: reply time, a follow-up sequence or the marketing-to-sales handover.
As agreed
Report against the baseline
What moved, what did not, and what changes next, in plain words. How often you get it is set in writing before work starts.
At renewal
Renew on the numbers
The term ends and you decide whether to continue from the results. The length is agreed in writing before anything starts.
What we need from you
What to have ready before the audit call.
None of it has to be tidy. We read what you have.
- Your catalogue with rated tank volumes
- Reviews and returns that mention size or breakage
- Which consumables are reordered
- Your store and marketplace links
- Groups and forums where your customers are active
Selling in India and abroad
Selling fish & aquarium supplies beyond your own market.
Where you sell decides sizes, units, seasons and returns. We work from Bengaluru and have no overseas office, so for a new country we start from your own sales and the platforms you already use.
Equipment and standards
Heaters, pumps and lights are electrical goods, with plugs and rules that vary by country. Check each product before listing overseas.
Live fish and plants
Moving live animals and plants across borders is tightly controlled. We do not write pages for it, and equipment and dry goods are the sensible start.
FAQ
Questions about selling fish & aquarium supplies online.
Not here? More answers, or ask on WhatsApp.
How do I stop wrong-size filter returns?
Can I sell aquarium products on marketplaces?
Can I recommend a product for a water problem?
How much does it cost?
How long is the contract?
How soon will we see results?
Who will actually do the work?
What do you need from us?
More in Pet Supplies
Sellers of fish & aquarium supplies also need
Also selling from a shop, a workshop or a warehouse? See the page for pet service businesses and veterinary clinics.
This page is part of the e-commerce section. The D2C brands page covers the arithmetic of acquisition cost and the second order for any brand.
Why us
Why owners pick GullySales over an agency.
Marketing and sales, as one job
Most agencies stop at the enquiry. We also fix what happens after it: the reply, the follow-up, the quote and the CRM.
The person on the first call does the work
No account managers in between. You are never handed to someone you have not met.
A baseline before anything starts
Your numbers are written down on day one, so every later report compares against something honest.
The fee in writing, split three ways
Our time, your media spend and production on separate lines. You always see what goes to us.
No guarantees we cannot keep
The term is agreed in writing and never a default twelve months. We never promise a ranking or a lead count, because nobody controls those.
One office, and we say so
Nagarbhavi, Bengaluru. We work across India by call and WhatsApp and travel when a session needs to be in person.
#257, 3rd floor, Sri Nanjundeshwara Complex, Nagarbhavi 8th Block, Outer Ring Road. How we work.
Engagement options
Ways to work with us.
Pick the size of commitment that fits. Every option starts with the free audit.
Option 1
The audit on its own
A 90-minute call and a written, scored report. It says honestly whether you need outside help, and many fixes are ones your own team can make.
Option 2
One fix, scoped
Start with the fix the audit ranks first, such as reply time or follow-up. The fee is in writing before anything starts.
Option 3
An ongoing programme
We run the work, report against the baseline, and you renew on the numbers. The term and the reporting are agreed in writing first.
Option 4
Guidance for your own team or agency
We plan, brief and check the work of your in-house team or current agency, instead of replacing them.
The offer
Start with a free audit of how your fish & aquarium supplies sell.
It is useful on its own, whether or not you hire us.
What you receive
- A 90-minute call with the person who will do the work
- A written, scored report on the six places orders leak
- Every fix ranked by what it returns and what it costs
- The one thing to do first, and why
- An honest line on whether you need outside help at all
- If you do, the scope and the fee in writing
No invoice. No obligation. No sales script.
Your next practical step
Get a free audit of how you sell, and a scored report of where the work is.
90 minutes. A written, scored report. No invoice and no obligation.