SeaSmart – FAQ’s

Product F.A.Q’s

1) How easy is it to install?

It’s easy if you can DIY or know someone who can. Just 2 tiny screws (or sticky pads) secure the SeaSmart by the Head and then it connects to the inlet sanitation hose of the pump (manual or electric). All you need are basic DIY tools. Full instructions come with the SeaSmart.

2) How much power does it use?

None! The SeaSmart is powered by its own small 9 volt PP3 Alkaline battery, which powers its microprocessor, pumping system and all electronics.

3) How long does the refill last?

That depends on usage. As a rough guide, on a boat with average use, it should last about a year, on a boat with good use about 6 to 12 months. On a boat sailing continuously with a crew of 4 using one head a refill should last about 2 months. A discrete LED indicator on the SeaSmart tells you when to change the refill. The microprocessor automatically reduces the sanitiser dose when your head’s being used a lot, as less is required and it saves your sanitiser.

4) How long does the battery last?

That depends on usage, but usually long enough to power 1 or 2 refills. A discrete LED indicator tells you when the battery needs changing. You must use good quality Alkaline PP3 batteries.

5) How do I get replacement refills?

From us or your local chandler. We dispatch replacement refills all over the world. You can order them on this Website, by phone on +44 (0)1425 281004, by email or by clicking here

6) How big is it?

Height: 26cm or 10 inches
Width: 11.6cm or 4½ inches
Depth: 7cm or 2¾ inches

7) What if my yacht has more than one Head?

You’ll need a SeaSmart for each marine toilet on the boat.

8) What if my yacht has a very long Inlet Sanitation Hose?

The very thin catheter like sanitiser tube has to be threaded down inside the inlet sanitation hose to within 15 cms (6 inches) of the seacock. SeaSmarts come with a 1.8 metre (6ft) length which you cut to length with scissors.

If your inlet sanitation hose is longer than 1.8 metres (6 feet), you will need an extension tube which you can buy in our online shop – just click the Orange Button. It has a connector which simply pushes onto the existing tube. It is essential that the disinfectant tube reaches down to within 15cms (6 inches) of the seacock or you may still get odours.

9) What if I need a longer tube between the SeaSmart and the “T” piece connection to the flush pump?

You can also install your SeaSmart anywhere the inlet sanitation hose is accessible between the inlet seacock and the flush pump. There’s full instructions on how to do this with every SeaSmart and you will need a straight connector (double hose tail), these are available in our online shop or at any Chandlers.

If you have to install further away and need a longer connection tube, we can supply to order, just call us.

For standard installation by the flush pump, your SeaSmart needs to be within 40cms (16 inches) of the flush water inlet to the flush pump. That’s just right for almost all manual heads and most electric heads flush pumps.

10) What if I have a holding tank?

Your SeaSmart will not affect your holding tank. The disinfectant doses are so small that the urine and faecal matter in the hoses and tank will completely neutralise the disinfectant and the tank will continue to work normally. You can discharge your tank in the normal ways but always in compliance with your national or international regulations.

11) How can I solve Holding Tank Odours?

Should you have an odour problem from a holding tank vent, you should look at ways of increasing the ventilation to the tank. Holding tank odours are caused by anaerobic bacteria and increasing ventilation will allow aerobic bacteria to regain control and odours will rapidly reduce and stop altogether.

Check there are no air leaks in the vent hose or the access panel on top of the tank and also try installing a larger air vent and/or another vent hose on the other side of the holding tank and connecting it to a fitting on the other side of the hull. This will get a good cross flow of air in the tank and will certainly solve the problem. Expensive carbon filters or Sulphur Dioxide filters just restrict the air flow and can aggravate the problem, it’s best to remove them.

Company FAQ’s

How did Wessex get involved with SeaSmart?

Derek Withrington of SeaSmart Marine approached Wessex some time ago to see if we had products that might achieve the same results as his quat based formula. We gave him a number of samples for testing including our biological products which proved to be as effective as the original biocidal fluid they’d previously used. With SeaSmart now officially closed as a business we are delighted to be able to continue supplying this product with an improved and greener formula.

Why did we change the formula?

Due to recent changes to the Biocidal Productions Regulations (BPR), the use of quaternary biocides in marine applications is no longer permitted. This means that the original biocidal fluid created by SeaSmart no longer meets the regulatory requirements, so we worked with Derek Withrington of SeaSmart Marine to create a biological version of their product.

What has changed in the formula?

We have made some small changes to the formula to better suit the delivery method as well as adding a food-safe, washable green dye, making SeaSmart Advanced both more effective and more eco-friendly at the same time.

What size/quantities of pouches will we be supplying?

We will be supplying single 400ml pouches of SeaSmart Advanced as well as multi-packs of 2, 4 and 10 pouches for a discounted rate.

Where can I buy the pouches?

Pouches can be purchased online from Wessex Boat Store or direct by calling +44 (0)1202 823699

Pouches will also be available from official distributors which you can find listed on the main SeaSmart page.

Will we be supplying the SeaSmart units?

We will not initially be manufacturing and selling the SeaSmart units but this is something we hope to do in the future depending on demand.

Do Wessex Chemical Factors have any other biological marine products?

Yes – lots! Our full range of marine products can be found on our Wessex Boat Store website here:


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