SLF - 100 Enzymes
SLF - 100 Enzymes
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Order by 3pm Mon–Thu for next-working-day delivery · FREE delivery over £50 · Free Wembley pickup
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Keep Your Root Zone Clean and Free of Salt Buildup
SLF-100 is a commercially proven enzymatic cleanser with over 18 years of use behind it, a 100% organic, OMRI-listed formula that breaks down mineral salts and organic residue in hydroponic systems and soilless media. Used regularly it goes to work immediately, keeping reservoirs, media and drip lines clear so roots stay clean and nutrient uptake stays consistent right through the cycle.
Key Benefits
- Organic and OMRI listed - suitable for organic and soilless growing programmes
- pH neutral in concentrate - no added sugars and no NPK, so it won't skew your feed
- Breaks out salts - dissolves the mineral and residue buildup that clogs drippers and stresses roots
- Broadly compatible - works alongside all nutrients, fertilisers, rooting compounds and H2O2
- Every stage - effective throughout propagation, veg and flower
Clogged drippers and salt buildup in your system?
Mineral salts and organic residue accumulate in reservoirs, media and irrigation lines over time, restricting nutrient uptake and eventually blocking drip emitters. SLF-100's blend of naturally occurring enzymes attacks that buildup on contact, keeping the whole system clear and running as it should.
How to Use
- General mix and media: 1 tsp per gallon of water, applied thoroughly once a week
- Hydro and recirculating: 1/2 tsp per gallon, applied after each feed or reservoir changeout
- Flush and clean-out: up to 2x the standard rate for immediate break-out, applied once a day for three days
- Compatibility: can be run with your normal feed and with H2O2; keeps its effect across a normal pH range
Technical Specifications
- Type: enzymatic system and media cleanser
- Certification: 100% organic, OMRI listed
- pH: neutral in concentrated form
- NPK / sugars: none added
- Compatibility: all nutrients, fertilisers, rooting compounds and H2O2
- Suitable for: hydroponic systems and soilless media, all grow stages

Free next-day delivery on orders over £50 (order by 3pm Mon–Thu). Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.