Running promix hp (peat based inert medium) with liquid fertilizers. Should you do dry backs as in water every other day. Or keep it always wet as in water multiple times a day?
Coco coir can be watered frequently, but Peat products should be treated as soil and allowed to dry between watering’s.
Peat likes to become acidic as it ages so watch the pH of the runoff to keep it in check.
As a promix product I would expect it to perform well.
From their own website…
When to water PRO-MIX HP?
When irrigating, add water to PRO-MIX HP until it is saturated from top to bottom of the container. You will know you have accomplished this when water runs out of the drainage holes at the bottom of the container. Over time, allow the growing medium to dry-out without applying additional water.
You will know when to apply water again when the surface of the growing medium turns color from a dark brown/black (wet) to a light brown/tan color (dry enough to rewater).
Does PRO-MIX HP have nutrients?
Yes, PRO-MIX contains a starter fertilizer to help plants acclimate to a new rooting environment. We strongly recommended to initiate a fertilizer program within 7-10 days after planting. The fertilizer program you select should take into consideration water quality, crop type and the stage of plant growth.