Slurry king


Here are the answers to some commonly asked questions. If you have a query that isn't already answered, please submit a question and we'll answer it as quickly as we can.

How much money could using SlurryKing save me?

Contact us and we'll arrange for a distributor to contact you to discuss your individual farm needs with no obligation to purchase.

Is using slurry treated by SlurryKing better than using artificial fertiliser?

It can replace between 20% and 50% of the nitrogen and all the P & K where it is used but it's real benefit is that it primes the soil with Plant Growth Promoting Rhizo-bacteria (PGPRs) and Plant Growth Promoting Fungi (PGPFs) which benefit the soil on a long term basis improving the uptake and transport of plant nutrients, protecting plants against pests and diseases, causing roots to go significanly deeper and have much higher biomass resulting in improved soil health.

The list of soil and plant benefits is too long for a short FAQ and it's important to point out that SlurryKING GOLD has been developed by Sylgen with many more PGPRs and PGPFs with a view to concentrating heavily on the soil and plant health benefits.

I have a crusting problem in my pit/lagoon. Can SlurryKing help?

Yes, SlurryKing Pigs and Cattle have been developed to assist the biological decomposition of slurry organic matter that acts as the glue between individual strands of hay, straw etc.

Once this glue is removed, the straw etc becomes free floating and much easier to mix in and spread.

SlurryKING GOLD also contains a number of fungi that produce powerful lignases, enzymes that break down lignin and other fibrous material to ver fine particle sizes making the slurry much more fluid.

My pits are brand new. Can I start using SlurryKing straight away?

Generally the answer is yes. However, new concrete pits may give an impaired performance in the first cycle through the possible high level of leached calcium. It's strongly recommended that SlurryKing Gold is used under these circumstances as the fungi used in this product effectively bind the calcium from interference.

Where can I purchase SlurryKing or SlurryKING GOLD?

Call Sylgen on 01559 370 222 or email

I’ve put SlurryKing into the liquid layer of my slurry but I’m not sure it’s working

It normally takes about 6 weeks for Slurry King to have a noticeable effect, although warm weather can speed this up a little.  The following signs can indicate that it is working, even when it is not immediately obvious:

  • The crust cracking, appearing thinner and becoming mobile (rising and falling with the wind)
  • Gaps appearing between the tank or lagoon wall and the crust
  • Bubbles coming up through the liquid layer, visible where the cracks have appeared 
  • Easier and quicker mixing
  • Slurry being emptied should appear more liquid in consistency and smell less.

I’ve heard from other farmers that this product doesn’t work. Why is this?

Firstly, was the product they used a SlurryKing product?

Secondly, it's very important that SlurryKing is applied in the correct quantities in the correct way. We’ve known instances where the powder has been thrown over the top of the crust with the expectation it will work. It will not. The SlurryKing powder must be mixed with luke-warm water and applied to the liquid layer of the slurry.

Our ‘how to use SlurryKing’ video shows you how to correctly us SlurryKing. If you need further assistance call Sylgen on 01559 370 222 or email

I use chemicals. As these end up in the slurry, will this reduce the effectiveness of SlurryKing?

Under normal conditions, diluted chemicals present no problems to the effectiveness of the product; there have been no reported problems over the last 13 years.  However, excessive concentration of chemicals, cleaners, heavy metals or salts (from feed or water sources) and antibiotics in the slurry tank will restrict the beneficial results of SlurryKing and should be limited as much as possible. 

After treatment of my lagoon/pit there are no visible signs of active biodigestion. Why?

Two to three weeks after treatment of a lagoon or pit the liquids should show bubbling and biologically more active than prior to treatment.  If no activity is observed, contact us.

Odours have been reduced but I still have problems flushing the pits clean. Why?

There could be many reasons for this. Contact us so we can give you advice tailored to your particular situation.

Are there any other benefits to using SlurryKing?

I have an odour problem coming from my lagoon. Will SlurryKing reduce these odours?

Yes, this is one of the key benefits of SlurryKing.  

It reduces odour by breaking down the solids in the slurry (which is where the odours are made and stored), through its controlled micro-biological and enzymatic activity.

SlurryKing is totally different from conventional odour suppressing chemicals in that it functions directly on the source of the odour by enzymatically changing the molecular structure of the odour-causing compounds. Indole and skatole, two of the most potent, penetrating odourisers found in animal waste, are enzymatically reduced to odourless compounds through bio-oxidation with SlurryKing. Organic amines, which produce some of the most offensive odours, are totally destroyed in the process.

I have a solids accumulation problem in the bottom of my pit/lagoon. Can SlurryKing help?

Yes, this is one of the benefits of SlurryKing: the bacteria break down the solids on the bottom of the slurry tank.  This has the additional benefit of reducing odour, as the solids are where the odour is made and stored.

In scientific terms, the unique SlurryKing cocktail of bacteria and fungi converts the solids from high molecular weight to low molecular weight.  As the solids are lighter, they become suspended in the liquid within the pit, creating a more homogenous, liquid slurry, rather than a slurry that has three layers of crust, liquid and solids.  High build-ups of solids can take more than one cycle to clean out completely.

How much SlurryKing will I need to apply to my lagoon/pit?

SlurryKing Pigs: Applications will vary based upon the size of your tanks, how your tanks are used and whether you are home mixing or compound feeding. Contact us on 01559 370222 for an accurate quantity estimate.

  • Instructions for use with SlurryKing Cattle
  • Instructions