Hardware for saleThread title: Calcium, Denitrater reactors Location: Klerksdorp. Shipping or Collection only: Both All sales to be conducted on the thread. I agree Photo's and description/list of items for sale: Calcium, denitrater reactors Notes: Brand new reactors never got around to use. They were just tested to see if pumps work. Postage will be an extra R100. Reactor 1 can be used as calcium or denitrater. I will provide the bio balls and hydrocarbonate media if used as calcium reacter. R800 Reactor 2 the same as reacter 1. R800 Reactor 3 is a denitrater. Comes with its own recirculation pump inside reactor. R800 Nice equipment to have if you struggling to get nitrates down with high fish load and having algae problems. No dibs first to pay gets it.