Liquid Science | Pure Guard 1L|5L

LIQUID SCIENCE Pure Guard – Substrate Pre-Soak & Mould Inhibitor

Pure Guard by LIQUID SCIENCE is a substrate steriliser and system cleanser for hydroponic root zones. It cleans and sanitises the root zone, helping improve overall plant health without harming plants or your hydroponic system. Active ingredient: Quaternary Ammonium Compound 1.0% w/v.

🛡️ Why Growers Choose Pure Guard

• Prophylactic protection – creates a preventive shield that fends off fungal diseases and mould outbreaks before they take hold
• Naturally derived – sourced from soy bean extract; non-toxic and non-systemic
• Safe for people, plants and pets – environmentally friendly with no harmful chemicals
• No withholding period – safe to use right up to harvest as it has no systemic qualities
• Organic dispersant + non-ionic surfactant – cleanses and pre-treats all materials in contact with the root zone

💧 Dosage & Application

• Preventative pre-soak sterilisation of substrate: 2ml per litre, applied at initial propagation or pre-seeding stage
• Algae blooms: 2ml per litre on the surface of growing media when an outbreak occurs, repeat every 7 days
• Phytophthora (root rot): 5ml per litre applied directly to the hot spot, weekly
• Botrytis & powdery mildew: 5ml per litre applied directly to the hot spot, weekly
• Mould on growing trays: 5ml per litre applied directly to the infected area, weekly

Apply using a hand-held mister or sprayer. Pure Guard must make contact with the entire surface that comes in contact with the root zone to be an effective cleanser and conditioner.

⚠️ Usage Notes

• May cause foaming when dosing tanks – this dissipates over time and will not harm plants
• Turn off all forms of oxygenation while dosing tanks
• Test for plant sensitivity before applying on a large scale, as plant varieties vary
• Pure Guard is not a regulator of plant growth
• Do not use in conjunction with other root zone treatments, stimulants or preventatives – apply as a standalone root zone treatment
• Does not promote beneficial bacterial growth
• Store in a cool, dark place away from heat or light

📦 Sizes

• 1 Litre
• 5 Litre
  

Please choose your products carefully, as A-Grade Hydroponics reserves the right not to accept returns based on either an incorrect choice or a change of mind.

However, we love happy customers so contact us with your query and we will do our best to accommodate you. If you have queries about a product you would like to purchase, please contact us to discuss your concerns before you buy.

A-Grade Hydroponics will honour all manufacturers warranties subject to the terms and conditions of those manufacturers. However warranty does not cover abuse, neglect, improper care, loss or damage from incorrect usage.

Warranty claims will be processed at A-Grade Hydroponics' discretion as a refund, repair or replacement. If products need to be returned to us for warranty purposes e-mail us at grow@agradehydroponics.com with the receipt/invoice number, date of purchase and a brief description of the fault (including photographs where possible). We will then issue you with a product return number.

All returns should be in original packaging and have the receipt/invoice number, date of purchase, and product return number enclosed. The product return number should also be written on the outside of the package for easy identification purposes.

A-Grade Hydroponics has a strict 'no returns' or refunds policy for liquid products, like nutrients, additives, gels, calibration fluids etc, so please choose these items carefully.

*All orders are dispatched in unmarked boxes to maintain your privacy.*

DISPATCH AND DELIVERY

Orders are shipped via Australia Post or shipping platform Big Post. Orders are generally dispatched on Tuesday, Wednesday and Friday. Please allow for additional delivery time for remote areas. If you require express delivery, please contact our sales representatives at 03 9555 6667 or email grow@agradehydroponics.com to obtain a quote. 

Couriers will attempt delivery to the specified address. If no one is home to receive the delivery, the couriers will leave your parcel somewhere safe. If there is no safe place, re-delivery or collection will be offered by the carrier.

Due to the increasing frequency of online fraud and theft, we are unable to ship to P.O. Boxes and Parcel Lockers.

SHIPPING COSTS

All freight charges are calculated on weight, dimensions and location. We are committed to keeping shipping charges at a minimum and do not charge handling fees.

Please note: Freight costs are subject to change. Regional areas, large and bulky orders, and tail-lift delivery occasionally incur an additional levy. Should shipping costs need to be amended it will be to reflect the actual charges, and not incur additional ‘shipping and handling’ fees. We will notify you if this rare situation occurs.

A-Grade Hydroponics reserves the right to cancel the order if shipping costs become prohibitive and customers will be issued a full refund.

PAYMENT

All payments must be cleared before dispatch. Payments can be made online via PayPal, AfterPay, PayID or Electronic Funds Transfer. Payments can also be accepted via credit card by phoning 03 9555 6667.

Please allow at least 24 hours for payments to clear.

FULFILMENT OF ORDERS

You will be notified immediately if an item is permanently unavailable, with options for a replacement item at equal or higher value, refund or store credit.

All refunds will clear within 3-5 business days. Store Credits will be issued as an electronic Gift Card to be used online or in-store.

DANGEROUS AND PROHIBITED GOODS

These goods are available for in-store collection only.