basically I have a cylinder denitrator with media (gravel like substance, not sulphur) which states run water through it for a day, shut off for three weeks then open so drips don't exceed 40 per min and anerobic digestion of nitrates should occur. no mention of nutrients or any other requirements except not to much water flow or it kills anerobic bacteria.
If they don't work I'll use it for water softening container.
If they don't work I'll use it for water softening container.