https://onwar.se/ 2026-10-01T05:25:53+00:00 https://onwar.se/ https://onwar.se/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2026-10-01T01:41:14+00:00 Anonymous (anonymous@undisclosed.example.com) https://onwar.se/doku.php?id=algae_in_garden_ponds:common_causes_and_management_approaches&rev=1790818874&do=diff Fish behaviour matters too, in koi and ornamental ponds. Fish gasping at the surface, gathering near inflows, or simply appearing less active than usual can be an early sign of an oxygen or water quality issue, though any specific fish health concern is a matter for a vet rather than a pond designer.