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Fox Farm

FoxFarm Sledgehammer

FoxFarm Sledgehammer

Regular price £24.90 GBP
Regular price Sale price £24.90 GBP
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Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup

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Description

Clear the salt build-up a heavy feeding schedule leaves behind

Sledgehammer is a natural, organic liquid rinse designed to remove the mineral salt deposits that accumulate in growing media and hydroponic systems after sustained heavy feeding. Concentrated fertiliser use over a full grow cycle inevitably leaves residue behind, and left unaddressed that build-up compromises how well roots can take up water and nutrition even when the feed itself is correct.

Its active ingredient is saponin, a natural extract of the yucca plant, which works by encouraging water movement through soil and soilless media and reducing the surface tension that otherwise limits moisture and nutrient absorption at the root. That makes it as much a maintenance tool for the growing system as a treatment for the plant itself.

It is used periodically through the grow - mixed into fresh water for garden and container use, or added at a lower rate to hydroponic reservoirs during regular feeding, with a dedicated flush during reservoir changes.

  • Natural, organic liquid rinse for mineral salt build-up
  • Active ingredient is saponin, a yucca plant extract
  • Improves water movement and nutrient absorption in growing media
  • Suitable for garden, container and hydroponic use
  • Used periodically through the grow, not as a one-off
  • Supports reservoir changes and routine system flushes

Technical Specifications

  • Active ingredient: saponin (yucca plant extract)
  • Formulation: natural, organic liquid rinse
  • Suitable media: garden, container and hydroponic systems
  • Use pattern: periodic flush and reservoir-change treatment
Feed Chart
FoxFarm SledgeHammer · soil, coco and container growing
Application Per 1 L Per 10 L
At each flush — FoxFarm schedule three across a 12-week soil run 2.61 ml 26.1 ml
NoteFoxFarm publish this as 2 teaspoons per US gallon of water (9.86 ml per US gallon by their own conversion of 1 tsp = 5 mL); the per-litre figures above are that divided by 3.785. FoxFarm schedule three separate flushes across a 12-week soil run, not just one at the end. Maintain a pH of 5.6 to 6.8, never mix pure concentrates together, and always add water first. On coco-based media, flush every two weeks during flowering. Check pH and EC after mixing.

FREE Express Delivery on orders over £60. We aim to post same day for next-working-day arrival — order by 3pm Mon–Fri. Delivery is 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. 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.