Septic Tank Starter Bacteria Kit | Concentrated Formula

Item number: 7108814585287
£52.95 £44.13 (excl. VAT)

12 in stock

  • For starting up septic tanks and septic pits
  • Improves the efficiency of your tank
  • Biological, non-toxic and safe for your pipes
  • Now even more concentrated. This package of 2 bottles of 250 ml is enough to treat a 3,000-litre septic tank
  • Contents: 2 bottles of 250 ml ℮

Septic Tank Starter kit for Septic Tank Start-Up and Maintenance.

Do you want to prevent odour and clogging of your septic tank and give it a proper start? Then the Septic Tank Starter kit is the product you need.

Starting up your septic tank does not have to be difficult. This septic tank starter kit contains all the bacteria that your septic tank needs. Roebic K37 is a very effective, 100% biological product that breaks down the organic pollution in the septic tank. This way, there is less sludge build-up, efficiency is improved and smells are a thing of the past.

New! Even more concentrated and 40% less plastic
This product is now even more concentrated! A 250 ml bottle is suitable for a septic tank of no less than 1,500 litres. So you do not compromise on the efficacy of the product, but you do save on the use of plastic. A bottle contains 40% less plastic. Good for your septic tank and for the environment.

What is Septic Tank Starter Kit suitable for?

The Septic Tank Starter Kit consists of 2 bottles of Roebic Septic Tank K37.

Roebic Septic Tank K37 is safe for all different types of pipes. And because it is 100% biodegradable, Roebic Septic Tank K37 is not harmful for the environment. Roebic Septic Tank K 37 can be used for systems that are connected to both grey (kitchen, bathroom) and black (toilet) wastewater. If the septic tank is only connected to a toilet, i.e. only to black water, then we recommend Roebic Septic Tank K47.

How do I use Septic Tank Starter Kit?

Shake well before use. Flush the entire contents of the packet down the toilet.
For tanks up to 3000 litres.
Repeat the dosage as described at least once a year.

Note: An important point with a septic tank, or this type of product, is that the use of chlorine is out of the question. Chlorine and other disinfectants will cause the biology in the septic tank to die. Fortunately, there are plenty of alternatives. You can read more about them.

How much Septic Tank Starter Kit do I need for my septic tank?

Septic Tank Starter Kit consists of 2 bottles of approximately 250ml Roebic Septic Tank K37 and is sufficient for a septic tank with a capacity up to 3000 litres. Do you have a larger tank? Then you can simply order extra K37.

Does Septic Tank Starter Kit also work for aerated septic tanks?

No, in this case septic tank starter kit is not suitable. For an aerated septic tank, you better use Roetech 106 PS. These are different bacteria cultures.

When is it best to add Septic Tank Starter Kit?

It is best to add Roebic K37 a few days after starting up the septic tank.

Is Septic Tank Starter Kit a preventative product?

Yes, it is. Roebic K37 is a preventive working product. (Septic Tank starter kit consists of 2 bottles of Roebic Septic Tank K37)

What can affect the effectiveness of K37?

In case of a septic tank or WTS, be careful with cleaning products that contain chlorine! These can seriously disrupt the biology in the tank.

Problems with the pipework leading to the septic tank can be tackled with Roebic K97.

Is the Septic Tank Starter Kit packaging recyclable?

Yes, the packaging is recyclable. We have chosen to provide more and more products with a new environmentally conscious sustainable packaging. Therefore the bottle may differ from the original picture above. Our new bottles are made of 100% recycled plastic. Of course, the content and functioning of the product is the same as in the original packaging.

To protect the products from damage, we use – if necessary – packing paper as filling material in our packages. The packing paper is made of 100% recycled paper.

Will you help us recycle? You can recycle the packaging with your old paper and plastic waste for reuse.

Would you like more information on the use and maintenance of a septic tank? Check out our knowledge base on the website.

More information:

In our webshop we sell several organic and ecological cleaning products, which are suitable in combination with a septic tank, cesspool or domestic wastewater system without affecting the function of the bacteria.

Customers rate us with a

9 out of 10

D Collins

19/03/2026
Suffering inexplicable sewer gas stench in our home … on mains and our utility company, various plumbers snd Drain specialists are baffled. we’re trying Drain Line Cleaner as an almost last resort. 1 x 4 doses so far and waiting for our 2nd delivery. Hoping for a result and will post further. Howver a 3 week lead time on amazon and c.£25 per bottle is almost as stinging as the stench.
Answer: Thank you for your review! I hope our K97 has helped in the meantime. If not, you are always welcome to contact us by email, mentioning your order number, so we can take a look at your situation!
Product: Roebic K97
Source: Google

Helen Nevin

03/02/2026
Quick delivery and good quality product
Product: Roebic K97
Source: Google

Chris Miller

18/01/2026
Fast delivery. Product very simple to use and, so far, seems to be doing the job that it is intended to do.
Product: Roebic K97
Source: Google

Mike

05/01/2026
I spoke with Richard who was able to advise me on the best products to use. Dispatched quickly and arrived well packaged.
Product: Bio-Recup LQD
Source: Kiyoh

Be Ge

28/12/2025
I had an obvious clog between soakaway and septic tank. Completely inaccessible to a human. This solved the problem almost instantly.
Product: Roebic K570
Source: Kiyoh

John

22-12-2025
Great product, good around service, quick delivery.
Product: Roebic K570
Source: Kiyoh

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