More dissolved oxygen for stronger, further-reaching roots
Helps hold back Pythium and root rot
Keeps reservoir water clear and suppresses algae
Breaks down biofilm in hydro pipes and pumps
Can also be used to sterilise pots and tools
Botanixx Oxygen 11.9%: The Root Zone Revitaliser
Think of Botanixx Oxygen 11.9% as a fresh breeze for your entire grow system. This high-grade hydrogen peroxide solution performs double duty: it supercharges your plants' metabolic rate and keeps your equipment and space sparkling clean.
Whether you are growing in soil or running a hydroponic setup, adding this formula ensures your roots aren't just surviving, they are thriving on a foundation of pure oxygen.
Please note that we currently do not have 5L and 10L bottles in stock at our nursery. Please allow 7–10 days for processing.
Why We Love It
Explosive Root Expansion: Increasing dissolved oxygen encourages roots to stretch further and grow stronger, which directly improves their ability to hunt for food.
Pathogen Patrol: It acts as a defensive shield for the root zone, helping to hold back nasty diseases like Pythium and root rot before they can take hold.
Reservoir Hygiene: Keep your water crystal clear. This formula stops water from becoming stale or smelly and actively suppresses the build-up of algae.
Resilience Against Heat: Plants fueled by high oxygen levels are far better equipped to handle environmental stress, such as heat spikes, allowing them to bounce back faster.
Biofilm Buster: For hydro growers, this is essential for breaking down organic waste and preventing that slimy biofilm from coating your pipes and pumps.
Structure & Yield: The result is a healthier plant from the bottom up, leading to sturdier stems, fuller leaves, and heavier yields.
Sizes Available
We stock this essential additive in 500ml, 1L, 5L and 10L.
Pro-Tip: The Clean-Up Crew While it is great for daily plant health, Botanixx Oxygen is also a powerful cleaner. Use it to sterilise your pots and tools, ensuring you start your growing with a completely sterile slate!
Delivery and returns
See all delivery pricing tiers
Based on your basket total, confirmed at checkout. Free delivery: Economy over £60 · Standard over £100 · Express over £150.
Every order is hand-packed and sent with tracked delivery.
Changed your mind? You can return unused items within 14 days of delivery. See our returns policy.
Your quick reference for choosing the right plant size. We group our plants by the diameter of their nursery pots which gives you a consistent way to understand scale.
5–8cm
Mini
Small but full of charm. These compact plants are perfect for desks, windowsills, and small shelves, or for building out a collection over time. Ideal if you enjoy watching your plants grow from the beginning. Approx. height: 10–20cm
9–11cm
Small
A step up in presence, great for side tables, shelves, or styling in clusters. Easy to move around and perfect for adding greenery without taking up too much space. Approx. height: 25–35cm
12–14cm
Medium
Our most versatile size. Works beautifully on shelves, desks, and plant stands, offering a fuller look without dominating a space. A great balance between impact and flexibility. Approx. height: 25–50cm
15–18cm
Large
More established plants with fuller foliage and stronger structure. Ideal for creating soft focal points in a room. Great for corners, beside furniture, or as standalone features. Approx. height: 40–70cm
19+cm
Extra Large
Big, impactful plants designed for floors and open spaces. These are your statement pieces and are perfect for anchoring a room or transforming a corner with instant greenery. Approx. height: 60cm–1.3m
Pots that fit this plant
We recommend
In their words
What our customers say
EP
Emily P.
Arrived just like the photos - maybe even fuller. Healthy, well-acclimated, and straight into my collection with no issues.
JR
James R.
Flawless leaves, stunning variegation, and clearly cared for by experts. It’s already a talking point in my home office.
SL
Sophie L.
Hard to find rare plants that are pet-safe. Ours arrived in perfect condition and looks amazing without any worry.
Good to know
Frequently Asked Questions
What is your returns policy?
Changed your mind? You can return pots, gifts, accessories and other non-plant items. Email hello@growtropicals.com with your order number within 14 days of delivery, then send the item back within 14 days of telling us. You pay the return postage.
Items must come back unused and in their original condition. If an item has been used, we may reduce your refund by the value it has lost, and for used items this can be the full price.
Live plants cannot be returned because you have changed your mind, but they are covered by our Live Arrival Guarantee.
If something arrives damaged, faulty or wrong, email us with your order number and photos and we will put it right at no cost to you. Full details are in our returns policy.
When will my order arrive and how much is shipping?
Choose your delivery speed at checkout. Express orders placed before 1pm are dispatched the same day, otherwise the next working day. Standard orders are dispatched within 2 to 3 working days and Economy orders within 4 to 5 working days. Once dispatched, every order travels by 24 hour tracked courier.
Delivery is free on orders over £60 with Economy, over £100 with Standard and over £150 with Express. Below that, the charge depends on your basket total and is always shown at checkout before you pay. The full price list is in our shipping policy.
Orders without plants are dispatched Monday to Friday. If your order also includes plants, it goes out Monday to Thursday so the plants are not left in the courier network over the weekend. Delivery can take longer at busy times such as Black Friday and Christmas.
Every order is hand-packed in eco-friendly, protective packaging - refined through thousands of deliveries to ensure your plant arrives healthy, hydrated, and looking its best.
Backed by our Live Arrival Guarantee.
Perfect for Gifting
From rare collector’s pieces to easy-care favourites, our plants arrive fully potted and ready to enjoy. Add a personalised note at checkout for a thoughtful finishing touch.
Delivered fresh, beautiful, and gift-ready.
Sustainability at Heart
All plants are ethically sourced from trusted growers, never wild-collected. Every order ships carbon-neutral in minimal-waste packaging.
Good for your home - and the planet.
Verified reviews
Rated by real customers
5 stars: 1 (100%)
4 stars: 0 (0%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)
K
Karen W.
Great service and product
Prompt delivery as described
Botanixx Oxygen 11.9% - Hydrogen Peroxide for Plants
