Mr Harris's Yr9 AT class and Peter tested Tanks 3-5... pH 4.2 Temp 28°C
Water quality: pH neutral to alkaline, moderately to quite hard water, a little salt can be added Temperature: 4 to 28°C
The recirculation system is running approx 3,500l (total capacity 10,600l when in full production- all Tanks 1-5) including water in sump/biofilter/foam fractionator.
Water quality and conditions: Bass can tolerate a wide range of water conditions, from quite acidic to very alkaline pH, moderately to very hard water, and quite high salt levels. Although the need to reduce stress results in control of pH and the addition of chemicals to attempt to stabilise pH to neutral 7.0!
* The gradual addition of Bi-Carb Soda will increase pH from 4.2 towards a value 7.0+. Initially 200g was added to the sump. * see later postings for updates on pH changes.
WHAT pH DO YOU THINK THE ADDITION OF 200g WILL RESULT IN? ** Pls comment **
This morning XXX Australian Bass were transported from CCAF MPG's to Wadalba ARC. Students will care and grow out the Bass for CCAF. All Bass survived the quick trip from Kariong to Wadalba and acclimatised quickly to the recirculation system.
System Clean- Risers flushed clean, backwash and refill of sump. The Foam Fractionator was recommissioned to remove 'scum' excess protein from the system.