|one of many leaks|
This is one of many leaks which have appeared this year.
There is dirty, mouldy algae forming round the various clips and they are working like blotting paper - soaking up the rain and ultimately letting it drip through.
It really will have to wait for this season. I hate the thought of trying to sort it with plants around but before I start next year it will need a good going over so that's a bit of research waiting for me.