Graphite/carbon has worked well for me. The anode shreds quite a bit but is easily filtered through clean sand or vac filtered if available.
You're across the pond but around here, I can buy 50 pound bags of pure KCl at a supermarket (intended for water softener). Been a while but don't you
need to start with NaCl unless you're using platinum or lead dioxide?? I might be confusing perchlorate but am too lazy to check. Bah!
Tank |