crackpothead

I reuse my coir. I soak it in water after a grow and then rinse it 2 or three times. I then let it dry out again before reusing. As of yet I have not had a ph issue and I think that the left over tiny root hairs from previous grows are beneficial to the new plant.

Hmmm…. so what’s the experiment?

@crackpothead, I checked again. What part is redundant? This is for beginners so they understand every aspect of it. Yes, you can use your lights, provided you take care of the distance, and the plant has grown enough - mid veg stage