MSU fertilizer concentration in winter for Catts

[mydogmimi]

Since I use RO water, I'm not sure using this water in order to "stop fertilizing" is such a good idea? It contains nothing whatsoever. I heard that is not good for the plants? Thoughts on this?

[SouthPark]

Originally Posted by mydogmimi

Since I use RO water, I'm not sure using this water in order to "stop fertilizing" is such a good idea? It contains nothing whatsoever. I heard that is not good for the plants? Thoughts on this?

There's always the method of using one or a few orchids for trials. Use a relatively weak solution.

I'm just wondering if using RO water is like humans continually drinking distilled or deionised water. Not good after a while.