18", 24" & 30" Genuine Volcanic Stone Feature The Atlantic Water Gardens three-piece natural basalt column set provides matched 18", 24", and 30" (46, 61, and 76 cm) pre-drilled volcanic stone columns as a complete grouping for pondless waterfall, fountain basin, and garden water feature installations. The graduated height grouping creates a naturalistic, asymmetrical arrangement that mimics the way columnar basalt rock formations appear in nature — a more organic aesthetic than a single column or a matched-height pair. Matched Set, Natural Variation Although the three columns are sized as a matched grouping, each basalt stone retains its natural variation in surface banding, texture, and columnar joint detail — no two basalt columns are identical. This natural variation is part of the material's appeal: the grouping reads as naturally occurring rather than manufactured. All three are pre-drilled through the centre for supply tubing, and the graduated heights create multiple water sound levels and surface areas when all three are running simultaneously. Pair with the Eco-Rise Triple Plumbing Kit for a single-pump three-column supply circuit. Heights 46 cm (18"), 61 cm (24"), 76 cm (30") — set of three Material Natural quarried basalt — genuine volcanic stone Core Drill All three pre-drilled for 3/4"–1" supply tubing Recommended Pump MD1000–MD1500 for all three columns via diverter Use With Eco-Rise Triple Plumbing Kit (sold separately) How to Install Place the three columns in the fountain basin or over an Eco-Blox reservoir in the desired grouping arrangement. Use an Eco-Rise Triple Plumbing Kit to supply all three from a single pump with individual flow adjustment valves. Thread supply tubing through each column's pre-drilled core. Adjust each column's flow valve independently to tune the water effect on each stone. Safe for koi, goldfish, and all aquatic life. Ideal for naturalistic Canadian garden water features and pondless waterfall installations seeking a premium stone aesthetic.
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