| | | Too many fish and overfeeding cause surplus nutrients in water | | Fallen leaves and decayed plant matter | | Too few plants/inappropriate planting | | Shallow water (water warms up more, so more algae growth) | | Pond newly set up, balance may not be right yet | | Carpet of algae (due to string algae) |
| | | Take out fish/feed less/use pontec® pond clear or algae stop | | Remove leaves and dead plants/suck out, use pontec® sludge vacuum and/or pond filter | | Change planting | | Use pond clear or algae stop, change water | | Perform partial water changes where necessary, add bacteria booster to the filter | | Remove with pond pliers/net/suck out with pontec® Pondomatic |
|
| | | Floating particles | | String algae | | Too many fish or overfeeding |
| | | Use pontec® pond filter | | Use pond filter with UVC light. Apply pond clear | | Remove fish with pond net, feed less |
|
| | | Normal evaporation or evaporation through stream | | No capillary barrier (seepage through to adjoining planting or earth) | | leak |
| | | Top up water | | Build capillary barrier, to create a barrier between water and garden planting | | Repair leak |
|
| | | Pests (bacteria, viruses, parasites) | | poisonous matter |
| | | Use pontec® filter with UVC appliance | | Use pontec® filter with UVC light. Partial water change |
|
| | | plant pests | | poisonous matter |
| | | Ask the specialist at your supplier | | Partial water change |
|
| | | too high protein or phosphate content |
| | | Use pontec® pond filter, keep fertilisers out, oversee fish feeding, partial water change |
|
