| Bast - I keep the Ph of the nutrient solution somewhere between 5.5 - 6.0. This tends to be the best range for hydroponics, and the orchids like this range as well.
There are some paphs that I would raise this number to around 7.0, and maybe even a touch higher. These would be ones that grow naturally on limestone cliffs like Paph. sanderianum, nivium, bellatulum and other similar species.
Nancy - I use the hydroton in the bottom of some pots instead of styrofoam peanuts to assist with drainage. I have a couple of seedlings in sphagnum moss and hydroton like this. |