Hi all,
Even though I have diverters, or a strainer, on the down-pipes, I still tend to get bit in the water butts (mainly moss and lichen from the roof) and I give them a clean out every 18 months or so.
cheers Darrel
Does the butt have a sealed top? The water in the butt should remain oxygenated, if there is access to atmospheric gases, assuming that there isn't a lot of organic matter in the bottom of the butt (which would decompose).The rainwater from the butt measured only 2 mg/l, which is the lowest level that the kit can indicate. For water at outside temperature (probably about 10°C), that is very low. Given that this is the lowest level the kit can indicate, it's possible that the rainwater is even lower in oxygen than this.
Even though I have diverters, or a strainer, on the down-pipes, I still tend to get bit in the water butts (mainly moss and lichen from the roof) and I give them a clean out every 18 months or so.
cheers Darrel