Anyone got these?

[MrsWho]

here

Expensive!
Get a big plastic milk bottle. Cut off the bottom. Push top end into the growbag soil with stick down middle to hold in place.
Voila! Saved 10.99 and eco-tastic.

NOt the same thing though, was thinking of the trough thing to 'drip' the water in.

And to be really eco you wouldn't have plastic milk bottles