by paddington on 12/10/2011 13:49:48
Recently installed an RO unit under the sink - sick of to-ing and fro-ing between the LFS and my house especially now that my Bolivians are regularly spawning I have a need of more RO water for fry tanks.
The unit is giving me RO with a TDS of 10, pre-filtered water is measuring 380-405 TDS, with a GH of 18-odd. I am not using a DI to get it right down to 0, I think that would be overkill.
I mix it with tap water to get a kh of 5, gh of 8, ph 7.4 (using API test kits), but I'm wondering what sort of minerals I could buy instead to re-mineralise the water - and whether it would actually be worthwhile? I assume something branded for use with Discus would be the right sort of product?