u/alexjirving

Trying to learn from people who already solved this.

If string algae kept returning in your koi pond, what gave you the biggest improvement first?

• stronger bottom circulation
• manual pull-out + frequent debris cleanup
• feeding less during warm spells
• more shade coverage
• filter / UV changes

What actually worked fastest in your case?

Trying to compare what causes the biggest outbreaks for most ponds:

• sunlight
• feed load
• filtration
• seasonal temp swings

Which one is your main trigger?

I am collecting practical methods from pond keepers who fixed recurring string algae without harming fish.

What worked best for you?

I can share a short checklist we use if mods are happy for me to post it in comments.

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[ Removed by Reddit on account of violating the content policy. ]