Algae Treatment: Contact Killers vs. Natural Control

Owner wants product that kills algae on contact, water still clear but major algae developing.

Contact Killers: High Risk

• Bleach, peroxide, copper—kill algae instantly but harm fish, plants, bacteria.
• AlgaeFix (Aquarium Pharmaceuticals) safer but still risky with overdoses.
• Dead algae decomposes → oxygen crash → fish kill.

Natural, Sustainable Approach

• Plants: Floaters (hyacinth, lettuce) + submerged (hornwort) outcompete algae.
• Barley straw: Inhibits algae slowly, safely.
• Beneficial bacteria: Consumes nutrients.
• Shade: 60% surface cover.
• Manual removal: Rake string algae.

Clear Water ≠ No Algae

String algae grows on surfaces in clear water. It's a sign of excess light/nutrients, not poor clarity.

Build balance, don't nuke it.