There is a 1" plastic hose joining the two 100 litre drums as close to the bottom as I can place them. Should be big enough to keep the
nutrient level in the two drums at near enough the same level during both the flooding and draining cycles.
Managed to find a few better quality worm drive clamps and now no leaks.
Will be maybe a month before there is any real attempt to grow any thing because of other commitments and lack of time.
Cheers Leon...