Remineralise RO water
I have a reef tank at the moment which Ive had for a few years, I want to set up a smallish freshwater planted tank.
I have an ro system which produces a TDS of 0, obviously I need to buffer this back somehow to use it, are they any decent of the shelve products to do this? ive seen one called Kent RO right, if not is there a formula for adding your own minerals to it?
I want to use ro water as tap water here in London is very poor, nitrates 40ppm P.H is nearly 9.