no need to buy expensive branded silver, this is just the job.
Really good sir
It definitely works
Pure distilled water and one of these, not changed my water in almost 3 years (not recommended, I'm lazy) and there's no sign of anything growing in the res at all.
Bought as just a back up in case I forgot to put any Biocide in. Now sitting in my res doing it's thing.
Everyone raves about these, i thought i would give it a go.
Not had any problems, really pleased with the loop, no growth at all in 8 months and counting.