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R&R SHOP – Medium Black Lava Rocks, 100% Natural, pH Neutral, Ideal for Drainage and Plant Growth, 10–20 mm (1L)
★★★★★
$23.99
Quantity
1
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About this item
- Dry matter: 90%
- Total porosity: 70%
- Water retention: 100 mL/L
- pH: 7.0
- 🌍 ORIGIN: Extracted and selected in Italy from basaltic volcanic rocks, naturally rich in iron and magnesium. This gives them their dark colour and high absorption capacity. The crushing, screening and washing process ensures a clean, stable and 100 % natural material, ideal as an inert soil amendment or as a substrate for hydroponic systems.
- 🌱 PLANTS: Thanks to their properties, lava rocks provide excellent absorbency, reducing watering frequency and storing nutrients supplied by fertilisers without altering the pH, while at the same time oxygenating the roots. Particularly useful in the early growth stages and for cutting propagation.
- 🛠️ USE: For an ideal mix, add 10–20 % lava rocks according to the required aeration of the substrate.
- ♻️ COMPACT SIZE: Thanks to the compact packaging, the product is practical and space-saving. Supplied in a resealable press-zip pouch.
Product details
Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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