We have a modern-ish tank, 20-30 years old, which the previous owner had installed. I only noticed recently that it is fairly smelly nearby - using the garden differently so we are near it more than before. Not terrible but noticeable.
I thought it was just full but after it was emptied nothing has changed. The smell is definitely from the tank not the drainage channels, etc. No signs of any damp patches, all looks fine.
Is this just the nature of these things, I guess it might be? I assume it has some sort of vent pipe(s), it's not air-tight. Got me thinking if you can buy any caps or even filters - or maybe these are standard and could wear out?
I thought it was just full but after it was emptied nothing has changed. The smell is definitely from the tank not the drainage channels, etc. No signs of any damp patches, all looks fine.
Is this just the nature of these things, I guess it might be? I assume it has some sort of vent pipe(s), it's not air-tight. Got me thinking if you can buy any caps or even filters - or maybe these are standard and could wear out?