We recycled the old system from the bank. The pebbles are still full of micro-organisms, so the cycling process will take much less time.
The participants did a wonderful job! Thanks for yet another very interesting day.
Last friday we built a new system. It's about time too, because the catfish are a little bit overstocked.
We recycled the old system from the bank. The pebbles are still full of micro-organisms, so the cycling process will take much less time.
The participants did a wonderful job! Thanks for yet another very interesting day.