macbrush
Fifth Instar
Another problem that I am worrying about feeding them broader leaves instead of narrow leaves is that I noticed leaves from trees such as E. robusta and C. torelliana contain more tannin than narrow leave trees such as E. tereticornis. When i go out collecting samples, most broad leaves had much deeper brown colour than narrow leaves. Turns out broad leave types need many more wet/dry cycle to get the tannin out of them, I tried boil/steam them, but after 10 times, each time for 10 mins, improvement is really negligible. But my guess would be tannin don't harm GBR since they mulch on bark and wood often.
And I also got some leaves from a local invert forum member, he bought them from Australia, and had been feeding his GBRs for years with them without any problem. They're narrow type leaves, by the smell of it, it definitely is not E. citriodora. Those leaves have a strong eucalyptus essential oil smell, so I probably wouldn't worry about dried E. robusta containing too much eucalyptus oil anymore as I previously mentioned.
And I also got some leaves from a local invert forum member, he bought them from Australia, and had been feeding his GBRs for years with them without any problem. They're narrow type leaves, by the smell of it, it definitely is not E. citriodora. Those leaves have a strong eucalyptus essential oil smell, so I probably wouldn't worry about dried E. robusta containing too much eucalyptus oil anymore as I previously mentioned.