Fertilizing Pond Plants in Gravel Substrate

Marginals Need Little; Lilies & Lotus Need Tablets

Gravel substrate, question about fertilizer.

• Marginals (bog plants): Fish waste usually sufficient. No extra fertilizer needed.
• Water Lilies & Lotus: Heavy feeders. Use **aquatic fertilizer tablets** (10-14-8) pushed into soil near roots monthly (growing season).
• Never use terrestrial fertilizer—causes massive algae blooms, harms fish.
• Gravel alone has no nutrients; plants must be potted in soil/clay with gravel cap.

If plants are potted correctly, fertilize lilies/lotus only.