Stoneworts keeping the water clearer

 

Both buckets have rainwater; the bucket on the left has stoneworts growing in it

Both buckets have rainwater; the bucket on the left has stoneworts in it

Everyone says that you should use water plants to soak up nutrients in ponds and keep the water clear. But does this actually work? We don’t really know: maybe sometimes yes, sometimes not. So we’re doing some simple trials in the garden. Not a substitute for proper experiments but a start. 

So we’ve got a couple of buckets in the garden where we’re seeing whether stoneworts – which look like normal submerged water plants but are actually giant algae – can help keep the water clear. Stoneworts are interesting because they grow in winter and so may have an early start for outcompeting microscopic floating algae in the spring.

We started with clean roof water – so the buckets are not ‘nutrient polluted’ in the normal sense. But it looks like the stoneworts may be keeping the water a clearer.

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