Checked PSL filters. No debris noted in either filter. The crystal chiller filter is starting to yellow. The diode chiller filter has darkening somewhat, but not as much as the crystal chiller. I plan to swap both sets of filters (2 filters in the chiller room and 2 in the PSL enclosure) when the PSL goes down for the 70 watt amp change. I have all 4 filters on hand. 

   Peter King - added 300ml water to crystal chiller this morning. 

   Closing FAMIS task #8305