I would like to share this with everyone. In May when i was at the coast i filled a 50ltr bucket with sea sand to use for my new DSB's i was planning. Last week i installed the two tanks, added NSW, washed the sand with RO water and filled the DSB's. The next day i tested the water, the system was not yet connected to my DT, i was stunned to see all the critters in the sump, they look like pods or sealice, about 5-8mm in size. How can this be after 4 months.