Description

Maintain perfect pH levels in your nutrient solution with Mills pH- 1L, a high-quality pH adjuster designed for hydroponic, coco and soil-based systems. By keeping pH within the ideal range, Mills pH- ensures your plants can absorb essential nutrients efficiently, promoting stronger growth, healthier foliage and higher yields.

Read the full product overview here...

Mills pH- is a concentrated liquid solution formulated for precise pH reduction in nutrient water. Controlling pH is critical in indoor growing, as fluctuations can cause nutrient lockout, poor plant development, or reduced flowering. Mills pH- provides a reliable and easy-to-use method for keeping nutrient solutions within the optimal pH range of 5.5 to 6.5 for most grow mediums.

Suitable for use with all water types and compatible with your standard nutrient program, this pH adjuster is an essential tool for growers seeking consistent results and healthy plants.

Key Features & Benefits

  • Precise pH Control: Easily lowers pH in hydroponic, coco, or soil nutrient solutions.
  • Concentrated Formula: Requires only a small amount for effective adjustment.
  • Enhances Nutrient Uptake: Helps plants absorb essential nutrients efficiently.
  • Safe & Compatible: Works with all nutrient programs and water types.
  • Easy to Use: Simple to mix and measure for consistent results.
  • Reliable for All Grow Mediums: Ideal for hydroponics, coco coir and soil cultivation.

How to Use

  • Shake well before use.
  • Add gradually: Mix small amounts into your nutrient solution while monitoring pH.
  • Measure pH: Use a calibrated pH meter for accurate adjustments.
  • Target Range: Maintain 5.5 to 6.5 for most plants, adjusting depending on specific crop requirements.
  • Mix thoroughly: Ensure uniform distribution before applying to your plants.

Frequently Asked Questions (FAQ)

When should I use Mills pH-?
Apply whenever your nutrient solution is outside the optimal pH range, typically before each feeding.

Can it be used in soil, coco and hydroponics?
Yes, Mills pH- is compatible with all common grow mediums.

How much should I add?
Start with small doses and gradually adjust, testing pH frequently to avoid over-correction.

Is it safe to mix with nutrients?
Yes, it is designed to work safely alongside all standard nutrient programs.

Maintaining correct pH is critical for nutrient availability. Even minor deviations can lead to deficiencies, poor growth, or reduced flowering. Mills pH- 1L provides an easy, reliable solution to keep your nutrient solution in the optimal range, ensuring plants absorb nutrients efficiently, develop strong roots and foliage and achieve maximum yield potential. It’s an essential tool for any grower seeking consistent, high-quality results.

Explore the range

See all Additives & Boosters (153)

Not sure which one is right for your setup? Message us on WhatsApp or call 0121 553 7872.

Delivery, returns and FAQs

Will my order arrive in plain packaging?

Yes. Every order is sent in plain, unbranded packaging as standard.

How quickly will my order arrive?

Order standard size items by 12pm on a working day and choose Next working day at checkout, and your order will be with you the next working day. Standard delivery takes 2 to 3 working days.

Bulky items such as grow tents, large fans and 50L bags of soil go by courier in 2 to 3 working days, or on a pallet for very heavy orders. Next day is not available for these, and if your basket includes a bulky item the whole order travels with it.

UK delivery is free on orders of £94.99 or more, except for bulky items. See our delivery page for full prices.

Can I collect from the shop?

Yes. Choose Click & Collect at checkout and pick up for free from our shop at Unit 2 Black Lake, West Bromwich, B70 0PJ. Orders are usually ready within 1 hour.

Can I return an item?

You have 14 days from receiving your order to tell us you want to cancel, then a further 14 days to send it back. Items need to be unopened and in a resaleable condition.

If you change your mind, the return postage is paid by you. If something arrives faulty or damaged, send us photos within 48 hours and we will cover the cost of putting it right. Full details are in our refund policy.

Do you price match?

Yes. If you find the Mills pH- (pH Down) Adjuster 1L cheaper at another UK retailer, use the Price Match button on this page. We usually reply within one business day.

Need help choosing?

Speak to our team. Call us on 0121 553 7872, message us on WhatsApp, or visit the shop in West Bromwich.

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