Repotting Pond Plants: Soil-Free Media & Algae Control

Why Not Dirt?

Regular soil/potting mix = nutrient bomb → explosive algae. Pond plants need anchor, not fertility.

Best Media (Ranked)

1. Calcined clay (Turface, Profile) — inert, porous, holds roots, no nutrients.
2. Aquatic planting media (clay-based, pre-washed).
3. Pea gravel (1/4–3/8") — cheap, works for most marginals/lilies.
4. Sand + gravel mix — heavy, stable.

Algae on Plants: Removal & Prevention

Clean: Gently hose off string algae. Trim heavily coated leaves.

Treat: "GreenClean" (granular peroxide) or "PondMarket Restor" — spot-treat pots.

Prevent: Barley straw (bales or liquid extract "Barley Fusion") — inhibits new algae. Add monthly.

Repotting Steps

1. Remove plant, shake off old media.
2. Divide if crowded (lilies: keep growing tips).
3. Pot in media, top with 1" gravel (keeps media down, deters fish).
4. Lower slowly to let air escape.
5. Fertilize with aquatic tabs (push deep into media).