05-13-2019, 08:25 AM
MidRambler, I was responding to your leaving off the carbon block reference in YOUR response:
"RLW are about 25 microns wide so they should not be able to get through at least a 10 micron filter, though the nominal ratings aren't precise; for example, the 20 micron filter says it removes 95% of particles over 20 microns and 99% over 30 microns."
As to the study, it was very much an initial trial, as you have read, there were inconsistencies in larval availability, run time for the filter trials & other things that happen on initial trials, HOWEVER, the fact that they can "weasel" through inconsistent pukas would give rise to recommend care in trusting filtration alone for RLW control...
"RLW are about 25 microns wide so they should not be able to get through at least a 10 micron filter, though the nominal ratings aren't precise; for example, the 20 micron filter says it removes 95% of particles over 20 microns and 99% over 30 microns."
As to the study, it was very much an initial trial, as you have read, there were inconsistencies in larval availability, run time for the filter trials & other things that happen on initial trials, HOWEVER, the fact that they can "weasel" through inconsistent pukas would give rise to recommend care in trusting filtration alone for RLW control...