Oxygenators keep dying / why is my wildlife pond so murky?
My wildlife pond is now about 3 months old and for the majority of that time it's been a murky puddle. I tried a pond treatment which didn't work and I've kept buying more oxygenators but they all seem to die. The first batch I mostly threw in the pond as instructed on the labels - they all died. The next batch I planted in baskets with just washed gravel in to hold them down... the ones near enough the surface that I can sort of see all seem to be dead. However the other plants - the lilies, water plantain, water forget met not etc are all thriving (bearing in mind they were all plug plants, so have grown massively from what you can see here). There is a LOT of mosquito larvae and beetle larvae, some tiny water snails and the dragonflies visit regularly. It is also the new local public bathes for the birds... I probably get about 40 birds who bathe in it every day! So while I'm still enjoying it I'd really love to get it visually a bit better - it really does look like such a murky puddle. Any ideas on what could be causing the permanently brown water and what I'm doing wrong with the oxygenators? (Ignore the edge mess - that's still a work in progress!)