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Optic Foliar

Optic Foliar Atak Concentrate – Powdery Mildew Spray

Optic Foliar Atak Concentrate – Powdery Mildew Spray

Regular price £15.95
Regular price Sale price £15.95
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£63.80 per litre · 250ml

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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

  • 14-day returns
  • Price match promise
  • Free Wembley store pickup
  • Advice from the team: 020 3488 0419
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Description

The only powdery mildew spray you can apply with the lights on

Atak is a copper sulphate-based foliar concentrate that combats and eradicates powdery mildew on contact while signalling the plant to raise its own defence response, without the leaf burn or damage that limits when most powdery mildew sprays can be used.

It's suitable from cuttings through to late flower, safe up to one week before harvest, and unusual among mildew treatments in that it can be sprayed while lights are on rather than needing a lights-off application window. Because it's a foliar application, it works across any growing medium - soil, coco or hydro alike.

Powdery mildew spreads fast in a humid canopy, and most effective sprays either have to be timed around the light cycle or leave a residue that carries through to taste. Atak's lights-on application and residue-free finish mean an outbreak can be hit the moment it's spotted rather than waiting for lights-off, and it can keep being used right up near harvest without a taste penalty.

  • Applies with lights on - no timing workaround needed
  • Eradicates and prevents powdery mildew on contact
  • Safe up to one week before harvest
  • No residual taste or damage to treated flower
  • Boosts the plant's own immune response
  • Format: concentrate, mixed with Transport
  • Dilution: 10ml concentrate per litre plus 7.5ml Transport per litre
  • Active chemistry: copper sulphate and organics
  • Application: spray tops of leaves, can be used with lights on
Feed Chart
Optic Foliar Atak · foliar spray, cuttings to late flower, any medium
Component Per 1 L Per 10 L
Atak concentrate 10 ml 100 ml
Optic Foliar Transport, into the same mix 7.5 ml 75 ml
Note — Atak is used with Optic Foliar Transport in the same spray, not on its own. Spray the tops of the leaves; it can be applied with the lights on. Safe up to one week before harvest. Check pH and EC after mixing.

FREE Express Delivery on orders over £60. We aim to post same day on Express Delivery — order by 3pm Mon–Fri — and delivery takes 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.