Coconut coir or coco is a preferred medium of many growers. It has little to no nutritional value to the plant. It retains moisture well while also allowing for optimal oxygen to the root zone. Coco can be watered multiple times a day, once a day, or every other day. We would not recommend allowing your coco medium to dry out.
What is the proper pH for coco?
The answers, 5.8-6.2
This also depends on the plant you are growing but the pH in a coco medium will always fall between those two numbers.
What kind of nutrients should be used with coco?
Coco specific nutrients are preferred but not required. Most big brands will have a coco line. General Hydroponics , House and Garden , Advanced Nutrients just to name a few. The reason for coco specific nutrients is coco’s special relationship with calcium, magnesium, and iron. If you are not using coco specific nutrients then you can supplement with a bottle of CalMag or CaliMagic, really any calcium / magnesium product. Just read the label to make sure it has all three elements.
How often do I water?
That is up to you as the grower. Coco is a very versatile medium. If you water multiple times a day you will see the plant grow more like a hydroponic plant. If you water once every other day you are going to see more soil like growth. We would recommend watering at least once a day, if not 2-3 times a day. The is because the roots need oxygen. Growers tend to forget that while the part of the plant that is above the medium thrives on Co2. The roots zone need oxygen to grow. Every time you water a plant you add oxygen to the root zone. (You know H2O).
But I am going to over water my plant?!
No you wont, coco is very resilient to over watering because it acts like a hydroponic medium when treated as such. You do not want to underwater coco.
Have you ever left a glass of salt water out and come back to only find salt in the the glass? Thats because when the water evaporated the salt is left behind. The same is true with coco and synthetic nutrients. When you allow coco to dry out all the salt that is in the medium drys to the roots of the plant and damages them.