[Richard VanHyfte]

I made up a sieve with 155 micron opening. I use about 5 cm length of a large diameter PVC pipe to which I fasten the cloth to the bottom with PVC cement. It must be cured and rinsed but I do use it quite often to rinse the BBS for my Paros. Still, the hardness does build up. I keep some RO water in a bucket with a couple of catappa leaves for water changes as this starts to build up. I also do use Epsom salts and a small amount of sodium carbonate in with the sodium chloride in the hatch water.